Home / 28,432.04-42,671.28-20,120.06

Finding the Fourth Proportional to 28,432.04, 42,671.28 and 20,120.06

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Solution

The fourth proportional to 28,432.04, 42,671.28 and 20,120.06 is: 30,196.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,432.04 : 42,671.28 = 20,120.06 : x
  2. Step 2: Convert to fraction form
    28,432.04/42,671.28 = 20,120.06/x
  3. Step 3: Cross multiply
    28,432.04x = 42,671.28 × 20,120.06
  4. Step 4: Simplify right side
    28,432.04x = 858,548,500.52
  5. Step 5: Solve for x
    x = 858,548,500.52/28,432.04
  6. Step 6: Final answer
    x = 30,196.52

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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.