Home / 22,819.32-31,490.88-13,388.04

Finding the Fourth Proportional to 22,819.32, 31,490.88 and 13,388.04

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Solution

The fourth proportional to 22,819.32, 31,490.88 and 13,388.04 is: 18,475.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,819.32 : 31,490.88 = 13,388.04 : x
  2. Step 2: Convert to fraction form
    22,819.32/31,490.88 = 13,388.04/x
  3. Step 3: Cross multiply
    22,819.32x = 31,490.88 × 13,388.04
  4. Step 4: Simplify right side
    22,819.32x = 421,601,161.08
  5. Step 5: Solve for x
    x = 421,601,161.08/22,819.32
  6. Step 6: Final answer
    x = 18,475.62

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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.