Home / 15,665.64-21,617.46-8,590.92

Finding the Fourth Proportional to 15,665.64, 21,617.46 and 8,590.92

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Solution

The fourth proportional to 15,665.64, 21,617.46 and 8,590.92 is: 11,854.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,665.64 : 21,617.46 = 8,590.92 : x
  2. Step 2: Convert to fraction form
    15,665.64/21,617.46 = 8,590.92/x
  3. Step 3: Cross multiply
    15,665.64x = 21,617.46 × 8,590.92
  4. Step 4: Simplify right side
    15,665.64x = 185,713,869.46
  5. Step 5: Solve for x
    x = 185,713,869.46/15,665.64
  6. Step 6: Final answer
    x = 11,854.85

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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.