Home / 15,536.16-21,440.90-8,819.24

Finding the Fourth Proportional to 15,536.16, 21,440.90 and 8,819.24

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Solution

The fourth proportional to 15,536.16, 21,440.90 and 8,819.24 is: 12,171.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,536.16 : 21,440.90 = 8,819.24 : x
  2. Step 2: Convert to fraction form
    15,536.16/21,440.90 = 8,819.24/x
  3. Step 3: Cross multiply
    15,536.16x = 21,440.90 × 8,819.24
  4. Step 4: Simplify right side
    15,536.16x = 189,092,442.92
  5. Step 5: Solve for x
    x = 189,092,442.92/15,536.16
  6. Step 6: Final answer
    x = 12,171.12

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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.