Home / 28,003.60-42,005.40-23,143.60

Finding the Fourth Proportional to 28,003.60, 42,005.40 and 23,143.60

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Solution

The fourth proportional to 28,003.60, 42,005.40 and 23,143.60 is: 34,715.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,003.60 : 42,005.40 = 23,143.60 : x
  2. Step 2: Convert to fraction form
    28,003.60/42,005.40 = 23,143.60/x
  3. Step 3: Cross multiply
    28,003.60x = 42,005.40 × 23,143.60
  4. Step 4: Simplify right side
    28,003.60x = 972,156,175.44
  5. Step 5: Solve for x
    x = 972,156,175.44/28,003.60
  6. Step 6: Final answer
    x = 34,715.40

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Similar ratio
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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.