Home / 28,113.14-42,168.27-8,391.86

Finding the Fourth Proportional to 28,113.14, 42,168.27 and 8,391.86

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Solution

The fourth proportional to 28,113.14, 42,168.27 and 8,391.86 is: 12,587.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,113.14 : 42,168.27 = 8,391.86 : x
  2. Step 2: Convert to fraction form
    28,113.14/42,168.27 = 8,391.86/x
  3. Step 3: Cross multiply
    28,113.14x = 42,168.27 × 8,391.86
  4. Step 4: Simplify right side
    28,113.14x = 353,870,218.28
  5. Step 5: Solve for x
    x = 353,870,218.28/28,113.14
  6. Step 6: Final answer
    x = 12,587.36

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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.