Home / 28,113.60-42,170.40-7,337.10

Finding the Fourth Proportional to 28,113.60, 42,170.40 and 7,337.10

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Solution

The fourth proportional to 28,113.60, 42,170.40 and 7,337.10 is: 11,005.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,113.60 : 42,170.40 = 7,337.10 : x
  2. Step 2: Convert to fraction form
    28,113.60/42,170.40 = 7,337.10/x
  3. Step 3: Cross multiply
    28,113.60x = 42,170.40 × 7,337.10
  4. Step 4: Simplify right side
    28,113.60x = 309,408,441.84
  5. Step 5: Solve for x
    x = 309,408,441.84/28,113.60
  6. Step 6: Final answer
    x = 11,005.65

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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.