Home / 20,700.20-28,565.48-11,747.17

Finding the Fourth Proportional to 20,700.20, 28,565.48 and 11,747.17

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Solution

The fourth proportional to 20,700.20, 28,565.48 and 11,747.17 is: 16,210.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,700.20 : 28,565.48 = 11,747.17 : x
  2. Step 2: Convert to fraction form
    20,700.20/28,565.48 = 11,747.17/x
  3. Step 3: Cross multiply
    20,700.20x = 28,565.48 × 11,747.17
  4. Step 4: Simplify right side
    20,700.20x = 335,563,490.96
  5. Step 5: Solve for x
    x = 335,563,490.96/20,700.20
  6. Step 6: Final answer
    x = 16,210.64

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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.