Home / 13,601.40-20,402.10-5,167.80

Finding the Fourth Proportional to 13,601.40, 20,402.10 and 5,167.80

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Solution

The fourth proportional to 13,601.40, 20,402.10 and 5,167.80 is: 7,751.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,601.40 : 20,402.10 = 5,167.80 : x
  2. Step 2: Convert to fraction form
    13,601.40/20,402.10 = 5,167.80/x
  3. Step 3: Cross multiply
    13,601.40x = 20,402.10 × 5,167.80
  4. Step 4: Simplify right side
    13,601.40x = 105,433,972.38
  5. Step 5: Solve for x
    x = 105,433,972.38/13,601.40
  6. Step 6: Final answer
    x = 7,751.70

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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.