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Finding the Fourth Proportional to 22,312.77, 30,789.68 and 12,750.77

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Solution

The fourth proportional to 22,312.77, 30,789.68 and 12,750.77 is: 17,594.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,312.77 : 30,789.68 = 12,750.77 : x
  2. Step 2: Convert to fraction form
    22,312.77/30,789.68 = 12,750.77/x
  3. Step 3: Cross multiply
    22,312.77x = 30,789.68 × 12,750.77
  4. Step 4: Simplify right side
    22,312.77x = 392,591,910.35
  5. Step 5: Solve for x
    x = 392,591,910.35/22,312.77
  6. Step 6: Final answer
    x = 17,594.94

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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.