Home / 28,076.40-42,114.60-7,299.90

Finding the Fourth Proportional to 28,076.40, 42,114.60 and 7,299.90

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Solution

The fourth proportional to 28,076.40, 42,114.60 and 7,299.90 is: 10,949.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,076.40 : 42,114.60 = 7,299.90 : x
  2. Step 2: Convert to fraction form
    28,076.40/42,114.60 = 7,299.90/x
  3. Step 3: Cross multiply
    28,076.40x = 42,114.60 × 7,299.90
  4. Step 4: Simplify right side
    28,076.40x = 307,432,368.54
  5. Step 5: Solve for x
    x = 307,432,368.54/28,076.40
  6. Step 6: Final answer
    x = 10,949.85

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Double scale
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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.