Home / 28,565.76-39,418.56-15,988.80

Finding the Fourth Proportional to 28,565.76, 39,418.56 and 15,988.80

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Solution

The fourth proportional to 28,565.76, 39,418.56 and 15,988.80 is: 22,063.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,565.76 : 39,418.56 = 15,988.80 : x
  2. Step 2: Convert to fraction form
    28,565.76/39,418.56 = 15,988.80/x
  3. Step 3: Cross multiply
    28,565.76x = 39,418.56 × 15,988.80
  4. Step 4: Simplify right side
    28,565.76x = 630,255,472.13
  5. Step 5: Solve for x
    x = 630,255,472.13/28,565.76
  6. Step 6: Final answer
    x = 22,063.32

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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.