Home / 21,627.13-29,847.53-13,127.30

Finding the Fourth Proportional to 21,627.13, 29,847.53 and 13,127.30

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Solution

The fourth proportional to 21,627.13, 29,847.53 and 13,127.30 is: 18,116.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,627.13 : 29,847.53 = 13,127.30 : x
  2. Step 2: Convert to fraction form
    21,627.13/29,847.53 = 13,127.30/x
  3. Step 3: Cross multiply
    21,627.13x = 29,847.53 × 13,127.30
  4. Step 4: Simplify right side
    21,627.13x = 391,817,331.33
  5. Step 5: Solve for x
    x = 391,817,331.33/21,627.13
  6. Step 6: Final answer
    x = 18,116.93

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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.