Home / 21,125.46-29,140.38-13,569.24

Finding the Fourth Proportional to 21,125.46, 29,140.38 and 13,569.24

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Solution

The fourth proportional to 21,125.46, 29,140.38 and 13,569.24 is: 18,717.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,125.46 : 29,140.38 = 13,569.24 : x
  2. Step 2: Convert to fraction form
    21,125.46/29,140.38 = 13,569.24/x
  3. Step 3: Cross multiply
    21,125.46x = 29,140.38 × 13,569.24
  4. Step 4: Simplify right side
    21,125.46x = 395,412,809.91
  5. Step 5: Solve for x
    x = 395,412,809.91/21,125.46
  6. Step 6: Final answer
    x = 18,717.36

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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.