Home / 14,364.59-19,820.70-7,990.34

Finding the Fourth Proportional to 14,364.59, 19,820.70 and 7,990.34

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Solution

The fourth proportional to 14,364.59, 19,820.70 and 7,990.34 is: 11,025.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,364.59 : 19,820.70 = 7,990.34 : x
  2. Step 2: Convert to fraction form
    14,364.59/19,820.70 = 7,990.34/x
  3. Step 3: Cross multiply
    14,364.59x = 19,820.70 × 7,990.34
  4. Step 4: Simplify right side
    14,364.59x = 158,374,132.04
  5. Step 5: Solve for x
    x = 158,374,132.04/14,364.59
  6. Step 6: Final answer
    x = 11,025.32

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.