Home / 28,565.40-39,418.38-15,989.88

Finding the Fourth Proportional to 28,565.40, 39,418.38 and 15,989.88

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Solution

The fourth proportional to 28,565.40, 39,418.38 and 15,989.88 is: 22,064.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,565.40 : 39,418.38 = 15,989.88 : x
  2. Step 2: Convert to fraction form
    28,565.40/39,418.38 = 15,989.88/x
  3. Step 3: Cross multiply
    28,565.40x = 39,418.38 × 15,989.88
  4. Step 4: Simplify right side
    28,565.40x = 630,295,165.99
  5. Step 5: Solve for x
    x = 630,295,165.99/28,565.40
  6. Step 6: Final answer
    x = 22,064.99

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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.