Home / 12,538.13-18,799.90-4,213.55

Finding the Fourth Proportional to 12,538.13, 18,799.90 and 4,213.55

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Solution

The fourth proportional to 12,538.13, 18,799.90 and 4,213.55 is: 6,317.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,538.13 : 18,799.90 = 4,213.55 : x
  2. Step 2: Convert to fraction form
    12,538.13/18,799.90 = 4,213.55/x
  3. Step 3: Cross multiply
    12,538.13x = 18,799.90 × 4,213.55
  4. Step 4: Simplify right side
    12,538.13x = 79,214,355.11
  5. Step 5: Solve for x
    x = 79,214,355.11/12,538.13
  6. Step 6: Final answer
    x = 6,317.88

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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.