Home / 13,545.40-20,318.10-11,241.40

Finding the Fourth Proportional to 13,545.40, 20,318.10 and 11,241.40

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Solution

The fourth proportional to 13,545.40, 20,318.10 and 11,241.40 is: 16,862.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,545.40 : 20,318.10 = 11,241.40 : x
  2. Step 2: Convert to fraction form
    13,545.40/20,318.10 = 11,241.40/x
  3. Step 3: Cross multiply
    13,545.40x = 20,318.10 × 11,241.40
  4. Step 4: Simplify right side
    13,545.40x = 228,403,889.34
  5. Step 5: Solve for x
    x = 228,403,889.34/13,545.40
  6. Step 6: Final answer
    x = 16,862.10

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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.