Home / 15,498.32-21,388.20-9,217.04

Finding the Fourth Proportional to 15,498.32, 21,388.20 and 9,217.04

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Solution

The fourth proportional to 15,498.32, 21,388.20 and 9,217.04 is: 12,719.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,498.32 : 21,388.20 = 9,217.04 : x
  2. Step 2: Convert to fraction form
    15,498.32/21,388.20 = 9,217.04/x
  3. Step 3: Cross multiply
    15,498.32x = 21,388.20 × 9,217.04
  4. Step 4: Simplify right side
    15,498.32x = 197,135,894.93
  5. Step 5: Solve for x
    x = 197,135,894.93/15,498.32
  6. Step 6: Final answer
    x = 12,719.82

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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.