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Finding the Fourth Proportional to 20,300.92, 28,013.17 and 11,348.17

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Solution

The fourth proportional to 20,300.92, 28,013.17 and 11,348.17 is: 15,659.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,300.92 : 28,013.17 = 11,348.17 : x
  2. Step 2: Convert to fraction form
    20,300.92/28,013.17 = 11,348.17/x
  3. Step 3: Cross multiply
    20,300.92x = 28,013.17 × 11,348.17
  4. Step 4: Simplify right side
    20,300.92x = 317,898,018.59
  5. Step 5: Solve for x
    x = 317,898,018.59/20,300.92
  6. Step 6: Final answer
    x = 15,659.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.