Home / 28,188.45-42,278.10-8,463.54

Finding the Fourth Proportional to 28,188.45, 42,278.10 and 8,463.54

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Solution

The fourth proportional to 28,188.45, 42,278.10 and 8,463.54 is: 12,693.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,188.45 : 42,278.10 = 8,463.54 : x
  2. Step 2: Convert to fraction form
    28,188.45/42,278.10 = 8,463.54/x
  3. Step 3: Cross multiply
    28,188.45x = 42,278.10 × 8,463.54
  4. Step 4: Simplify right side
    28,188.45x = 357,822,390.47
  5. Step 5: Solve for x
    x = 357,822,390.47/28,188.45
  6. Step 6: Final answer
    x = 12,693.94

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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.