Home / 20,838.29-31,250.14-8,988.84

Finding the Fourth Proportional to 20,838.29, 31,250.14 and 8,988.84

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Solution

The fourth proportional to 20,838.29, 31,250.14 and 8,988.84 is: 13,480.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,838.29 : 31,250.14 = 8,988.84 : x
  2. Step 2: Convert to fraction form
    20,838.29/31,250.14 = 8,988.84/x
  3. Step 3: Cross multiply
    20,838.29x = 31,250.14 × 8,988.84
  4. Step 4: Simplify right side
    20,838.29x = 280,902,485.97
  5. Step 5: Solve for x
    x = 280,902,485.97/20,838.29
  6. Step 6: Final answer
    x = 13,480.12

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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.