Home / 28,270.20-42,412.68-15,111.84

Finding the Fourth Proportional to 28,270.20, 42,412.68 and 15,111.84

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Solution

The fourth proportional to 28,270.20, 42,412.68 and 15,111.84 is: 22,671.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,270.20 : 42,412.68 = 15,111.84 : x
  2. Step 2: Convert to fraction form
    28,270.20/42,412.68 = 15,111.84/x
  3. Step 3: Cross multiply
    28,270.20x = 42,412.68 × 15,111.84
  4. Step 4: Simplify right side
    28,270.20x = 640,933,634.13
  5. Step 5: Solve for x
    x = 640,933,634.13/28,270.20
  6. Step 6: Final answer
    x = 22,671.70

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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.