Home / 28,508.52-42,770.70-11,876.40

Finding the Fourth Proportional to 28,508.52, 42,770.70 and 11,876.40

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Solution

The fourth proportional to 28,508.52, 42,770.70 and 11,876.40 is: 17,817.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,508.52 : 42,770.70 = 11,876.40 : x
  2. Step 2: Convert to fraction form
    28,508.52/42,770.70 = 11,876.40/x
  3. Step 3: Cross multiply
    28,508.52x = 42,770.70 × 11,876.40
  4. Step 4: Simplify right side
    28,508.52x = 507,961,941.48
  5. Step 5: Solve for x
    x = 507,961,941.48/28,508.52
  6. Step 6: Final answer
    x = 17,817.90

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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.