Home / 20,868.45-31,265.69-17,337.80

Finding the Fourth Proportional to 20,868.45, 31,265.69 and 17,337.80

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Solution

The fourth proportional to 20,868.45, 31,265.69 and 17,337.80 is: 25,975.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868.45 : 31,265.69 = 17,337.80 : x
  2. Step 2: Convert to fraction form
    20,868.45/31,265.69 = 17,337.80/x
  3. Step 3: Cross multiply
    20,868.45x = 31,265.69 × 17,337.80
  4. Step 4: Simplify right side
    20,868.45x = 542,078,037.06
  5. Step 5: Solve for x
    x = 542,078,037.06/20,868.45
  6. Step 6: Final answer
    x = 25,975.96

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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.