Home / 12,538.32-18,810.36-6,380.88

Finding the Fourth Proportional to 12,538.32, 18,810.36 and 6,380.88

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Solution

The fourth proportional to 12,538.32, 18,810.36 and 6,380.88 is: 9,572.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,538.32 : 18,810.36 = 6,380.88 : x
  2. Step 2: Convert to fraction form
    12,538.32/18,810.36 = 6,380.88/x
  3. Step 3: Cross multiply
    12,538.32x = 18,810.36 × 6,380.88
  4. Step 4: Simplify right side
    12,538.32x = 120,026,649.92
  5. Step 5: Solve for x
    x = 120,026,649.92/12,538.32
  6. Step 6: Final answer
    x = 9,572.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.