Home / 10,152.05-15,187.05-8,780.61

Finding the Fourth Proportional to 10,152.05, 15,187.05 and 8,780.61

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Solution

The fourth proportional to 10,152.05, 15,187.05 and 8,780.61 is: 13,135.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,152.05 : 15,187.05 = 8,780.61 : x
  2. Step 2: Convert to fraction form
    10,152.05/15,187.05 = 8,780.61/x
  3. Step 3: Cross multiply
    10,152.05x = 15,187.05 × 8,780.61
  4. Step 4: Simplify right side
    10,152.05x = 133,351,563.10
  5. Step 5: Solve for x
    x = 133,351,563.10/10,152.05
  6. Step 6: Final answer
    x = 13,135.44

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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.