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Finding the Fourth Proportional to 18,661.37, 25,753.35 and 10,164.20

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Solution

The fourth proportional to 18,661.37, 25,753.35 and 10,164.20 is: 14,026.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,661.37 : 25,753.35 = 10,164.20 : x
  2. Step 2: Convert to fraction form
    18,661.37/25,753.35 = 10,164.20/x
  3. Step 3: Cross multiply
    18,661.37x = 25,753.35 × 10,164.20
  4. Step 4: Simplify right side
    18,661.37x = 261,762,095.61
  5. Step 5: Solve for x
    x = 261,762,095.61/18,661.37
  6. Step 6: Final answer
    x = 14,026.95

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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.