Home / 28,147.91-42,178.11-10,608.17

Finding the Fourth Proportional to 28,147.91, 42,178.11 and 10,608.17

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Solution

The fourth proportional to 28,147.91, 42,178.11 and 10,608.17 is: 15,895.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,147.91 : 42,178.11 = 10,608.17 : x
  2. Step 2: Convert to fraction form
    28,147.91/42,178.11 = 10,608.17/x
  3. Step 3: Cross multiply
    28,147.91x = 42,178.11 × 10,608.17
  4. Step 4: Simplify right side
    28,147.91x = 447,432,561.16
  5. Step 5: Solve for x
    x = 447,432,561.16/28,147.91
  6. Step 6: Final answer
    x = 15,895.76

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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.