Home / 21,428.10-29,539.67-15,034.76

Finding the Fourth Proportional to 21,428.10, 29,539.67 and 15,034.76

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Solution

The fourth proportional to 21,428.10, 29,539.67 and 15,034.76 is: 20,726.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,428.10 : 29,539.67 = 15,034.76 : x
  2. Step 2: Convert to fraction form
    21,428.10/29,539.67 = 15,034.76/x
  3. Step 3: Cross multiply
    21,428.10x = 29,539.67 × 15,034.76
  4. Step 4: Simplify right side
    21,428.10x = 444,121,848.93
  5. Step 5: Solve for x
    x = 444,121,848.93/21,428.10
  6. Step 6: Final answer
    x = 20,726.14

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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.