Home / 27,709.50-38,239.11-15,134.28

Finding the Fourth Proportional to 27,709.50, 38,239.11 and 15,134.28

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Solution

The fourth proportional to 27,709.50, 38,239.11 and 15,134.28 is: 20,885.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,709.50 : 38,239.11 = 15,134.28 : x
  2. Step 2: Convert to fraction form
    27,709.50/38,239.11 = 15,134.28/x
  3. Step 3: Cross multiply
    27,709.50x = 38,239.11 × 15,134.28
  4. Step 4: Simplify right side
    27,709.50x = 578,721,397.69
  5. Step 5: Solve for x
    x = 578,721,397.69/27,709.50
  6. Step 6: Final answer
    x = 20,885.31

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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.