Home / 15,590.67-21,516.60-8,518.15

Finding the Fourth Proportional to 15,590.67, 21,516.60 and 8,518.15

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Solution

The fourth proportional to 15,590.67, 21,516.60 and 8,518.15 is: 11,755.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,590.67 : 21,516.60 = 8,518.15 : x
  2. Step 2: Convert to fraction form
    15,590.67/21,516.60 = 8,518.15/x
  3. Step 3: Cross multiply
    15,590.67x = 21,516.60 × 8,518.15
  4. Step 4: Simplify right side
    15,590.67x = 183,281,626.29
  5. Step 5: Solve for x
    x = 183,281,626.29/15,590.67
  6. Step 6: Final answer
    x = 11,755.85

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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.