Home / 21,437.25-29,569.62-15,459.45

Finding the Fourth Proportional to 21,437.25, 29,569.62 and 15,459.45

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Solution

The fourth proportional to 21,437.25, 29,569.62 and 15,459.45 is: 21,324.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,437.25 : 29,569.62 = 15,459.45 : x
  2. Step 2: Convert to fraction form
    21,437.25/29,569.62 = 15,459.45/x
  3. Step 3: Cross multiply
    21,437.25x = 29,569.62 × 15,459.45
  4. Step 4: Simplify right side
    21,437.25x = 457,130,061.91
  5. Step 5: Solve for x
    x = 457,130,061.91/21,437.25
  6. Step 6: Final answer
    x = 21,324.10

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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.