Home / 28,479.55-39,301.30-15,732.73

Finding the Fourth Proportional to 28,479.55, 39,301.30 and 15,732.73

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Solution

The fourth proportional to 28,479.55, 39,301.30 and 15,732.73 is: 21,710.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,479.55 : 39,301.30 = 15,732.73 : x
  2. Step 2: Convert to fraction form
    28,479.55/39,301.30 = 15,732.73/x
  3. Step 3: Cross multiply
    28,479.55x = 39,301.30 × 15,732.73
  4. Step 4: Simplify right side
    28,479.55x = 618,316,810.34
  5. Step 5: Solve for x
    x = 618,316,810.34/28,479.55
  6. Step 6: Final answer
    x = 21,710.91

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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.