Home / 10,902.40-16,353.60-4,325.20

Finding the Fourth Proportional to 10,902.40, 16,353.60 and 4,325.20

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Solution

The fourth proportional to 10,902.40, 16,353.60 and 4,325.20 is: 6,487.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,902.40 : 16,353.60 = 4,325.20 : x
  2. Step 2: Convert to fraction form
    10,902.40/16,353.60 = 4,325.20/x
  3. Step 3: Cross multiply
    10,902.40x = 16,353.60 × 4,325.20
  4. Step 4: Simplify right side
    10,902.40x = 70,732,590.72
  5. Step 5: Solve for x
    x = 70,732,590.72/10,902.40
  6. Step 6: Final answer
    x = 6,487.80

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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.