Home / 28,306.08-42,459.48-12,291.96

Finding the Fourth Proportional to 28,306.08, 42,459.48 and 12,291.96

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Solution

The fourth proportional to 28,306.08, 42,459.48 and 12,291.96 is: 18,438.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,306.08 : 42,459.48 = 12,291.96 : x
  2. Step 2: Convert to fraction form
    28,306.08/42,459.48 = 12,291.96/x
  3. Step 3: Cross multiply
    28,306.08x = 42,459.48 × 12,291.96
  4. Step 4: Simplify right side
    28,306.08x = 521,910,229.78
  5. Step 5: Solve for x
    x = 521,910,229.78/28,306.08
  6. Step 6: Final answer
    x = 18,438.10

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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.