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Finding the Fourth Proportional to 15,143.00, 20,906.03 and 10,123.83

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Solution

The fourth proportional to 15,143.00, 20,906.03 and 10,123.83 is: 13,976.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,143.00 : 20,906.03 = 10,123.83 : x
  2. Step 2: Convert to fraction form
    15,143.00/20,906.03 = 10,123.83/x
  3. Step 3: Cross multiply
    15,143.00x = 20,906.03 × 10,123.83
  4. Step 4: Simplify right side
    15,143.00x = 211,649,043.08
  5. Step 5: Solve for x
    x = 211,649,043.08/15,143.00
  6. Step 6: Final answer
    x = 13,976.70

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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.