Home / 14,019,803.40-21,029,705.10-7,642,511.40

Finding the Fourth Proportional to 14,019,803.40, 21,029,705.10 and 7,642,511.40

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Solution

The fourth proportional to 14,019,803.40, 21,029,705.10 and 7,642,511.40 is: 11,463,767.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,019,803.40 : 21,029,705.10 = 7,642,511.40 : x
  2. Step 2: Convert to fraction form
    14,019,803.40/21,029,705.10 = 7,642,511.40/x
  3. Step 3: Cross multiply
    14,019,803.40x = 21,029,705.10 × 7,642,511.40
  4. Step 4: Simplify right side
    14,019,803.40x = 160,719,760,965,388.16
  5. Step 5: Solve for x
    x = 160,719,760,965,388.16/14,019,803.40
  6. Step 6: Final answer
    x = 11,463,767.10

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.