Home / 13,941.52-20,912.18-9,921.89

Finding the Fourth Proportional to 13,941.52, 20,912.18 and 9,921.89

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Solution

The fourth proportional to 13,941.52, 20,912.18 and 9,921.89 is: 14,882.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,941.52 : 20,912.18 = 9,921.89 : x
  2. Step 2: Convert to fraction form
    13,941.52/20,912.18 = 9,921.89/x
  3. Step 3: Cross multiply
    13,941.52x = 20,912.18 × 9,921.89
  4. Step 4: Simplify right side
    13,941.52x = 207,488,352.29
  5. Step 5: Solve for x
    x = 207,488,352.29/13,941.52
  6. Step 6: Final answer
    x = 14,882.77

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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.