Home / 13,545.60-20,311.68-4,310.40

Finding the Fourth Proportional to 13,545.60, 20,311.68 and 4,310.40

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Solution

The fourth proportional to 13,545.60, 20,311.68 and 4,310.40 is: 6,463.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,545.60 : 20,311.68 = 4,310.40 : x
  2. Step 2: Convert to fraction form
    13,545.60/20,311.68 = 4,310.40/x
  3. Step 3: Cross multiply
    13,545.60x = 20,311.68 × 4,310.40
  4. Step 4: Simplify right side
    13,545.60x = 87,551,465.47
  5. Step 5: Solve for x
    x = 87,551,465.47/13,545.60
  6. Step 6: Final answer
    x = 6,463.46

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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.