Home / 21,127.29-29,129.19-13,560.27

Finding the Fourth Proportional to 21,127.29, 29,129.19 and 13,560.27

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Solution

The fourth proportional to 21,127.29, 29,129.19 and 13,560.27 is: 18,696.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127.29 : 29,129.19 = 13,560.27 : x
  2. Step 2: Convert to fraction form
    21,127.29/29,129.19 = 13,560.27/x
  3. Step 3: Cross multiply
    21,127.29x = 29,129.19 × 13,560.27
  4. Step 4: Simplify right side
    21,127.29x = 394,999,681.28
  5. Step 5: Solve for x
    x = 394,999,681.28/21,127.29
  6. Step 6: Final answer
    x = 18,696.18

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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.