Home / 38,914-58,380.20-12,618.68

Finding the Fourth Proportional to 38,914, 58,380.20 and 12,618.68

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Solution

The fourth proportional to 38,914, 58,380.20 and 12,618.68 is: 18,931.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,914 : 58,380.20 = 12,618.68 : x
  2. Step 2: Convert to fraction form
    38,914/58,380.20 = 12,618.68/x
  3. Step 3: Cross multiply
    38,914x = 58,380.20 × 12,618.68
  4. Step 4: Simplify right side
    38,914x = 736,681,062.14
  5. Step 5: Solve for x
    x = 736,681,062.14/38,914
  6. Step 6: Final answer
    x = 18,931.00

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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.