Home / 20,714.18-28,585.65-11,282.66

Finding the Fourth Proportional to 20,714.18, 28,585.65 and 11,282.66

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Solution

The fourth proportional to 20,714.18, 28,585.65 and 11,282.66 is: 15,570.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,714.18 : 28,585.65 = 11,282.66 : x
  2. Step 2: Convert to fraction form
    20,714.18/28,585.65 = 11,282.66/x
  3. Step 3: Cross multiply
    20,714.18x = 28,585.65 × 11,282.66
  4. Step 4: Simplify right side
    20,714.18x = 322,522,169.83
  5. Step 5: Solve for x
    x = 322,522,169.83/20,714.18
  6. Step 6: Final answer
    x = 15,570.12

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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.