Home / 15,590.60-21,515.04-8,517.02

Finding the Fourth Proportional to 15,590.60, 21,515.04 and 8,517.02

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Solution

The fourth proportional to 15,590.60, 21,515.04 and 8,517.02 is: 11,753.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,590.60 : 21,515.04 = 8,517.02 : x
  2. Step 2: Convert to fraction form
    15,590.60/21,515.04 = 8,517.02/x
  3. Step 3: Cross multiply
    15,590.60x = 21,515.04 × 8,517.02
  4. Step 4: Simplify right side
    15,590.60x = 183,244,123.89
  5. Step 5: Solve for x
    x = 183,244,123.89/15,590.60
  6. Step 6: Final answer
    x = 11,753.50

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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.