Home / 28,180.64-42,277.98-8,459.56

Finding the Fourth Proportional to 28,180.64, 42,277.98 and 8,459.56

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Solution

The fourth proportional to 28,180.64, 42,277.98 and 8,459.56 is: 12,691.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,180.64 : 42,277.98 = 8,459.56 : x
  2. Step 2: Convert to fraction form
    28,180.64/42,277.98 = 8,459.56/x
  3. Step 3: Cross multiply
    28,180.64x = 42,277.98 × 8,459.56
  4. Step 4: Simplify right side
    28,180.64x = 357,653,108.49
  5. Step 5: Solve for x
    x = 357,653,108.49/28,180.64
  6. Step 6: Final answer
    x = 12,691.45

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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.