Home / 28,170.32-42,228.18-15,678.92

Finding the Fourth Proportional to 28,170.32, 42,228.18 and 15,678.92

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Solution

The fourth proportional to 28,170.32, 42,228.18 and 15,678.92 is: 23,503.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,170.32 : 42,228.18 = 15,678.92 : x
  2. Step 2: Convert to fraction form
    28,170.32/42,228.18 = 15,678.92/x
  3. Step 3: Cross multiply
    28,170.32x = 42,228.18 × 15,678.92
  4. Step 4: Simplify right side
    28,170.32x = 662,092,255.97
  5. Step 5: Solve for x
    x = 662,092,255.97/28,170.32
  6. Step 6: Final answer
    x = 23,503.19

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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.