Home / 13,420.50-20,141.13-9,289.38

Finding the Fourth Proportional to 13,420.50, 20,141.13 and 9,289.38

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Solution

The fourth proportional to 13,420.50, 20,141.13 and 9,289.38 is: 13,941.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.50 : 20,141.13 = 9,289.38 : x
  2. Step 2: Convert to fraction form
    13,420.50/20,141.13 = 9,289.38/x
  3. Step 3: Cross multiply
    13,420.50x = 20,141.13 × 9,289.38
  4. Step 4: Simplify right side
    13,420.50x = 187,098,610.20
  5. Step 5: Solve for x
    x = 187,098,610.20/13,420.50
  6. Step 6: Final answer
    x = 13,941.25

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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.