Home / 15,451.08-21,321.33-10,422.12

Finding the Fourth Proportional to 15,451.08, 21,321.33 and 10,422.12

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Solution

The fourth proportional to 15,451.08, 21,321.33 and 10,422.12 is: 14,381.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,451.08 : 21,321.33 = 10,422.12 : x
  2. Step 2: Convert to fraction form
    15,451.08/21,321.33 = 10,422.12/x
  3. Step 3: Cross multiply
    15,451.08x = 21,321.33 × 10,422.12
  4. Step 4: Simplify right side
    15,451.08x = 222,213,459.82
  5. Step 5: Solve for x
    x = 222,213,459.82/15,451.08
  6. Step 6: Final answer
    x = 14,381.74

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Double scale
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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.