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Finding the Fourth Proportional to 18,881.75, 26,056.86 and 10,499.87

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Solution

The fourth proportional to 18,881.75, 26,056.86 and 10,499.87 is: 14,489.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,881.75 : 26,056.86 = 10,499.87 : x
  2. Step 2: Convert to fraction form
    18,881.75/26,056.86 = 10,499.87/x
  3. Step 3: Cross multiply
    18,881.75x = 26,056.86 × 10,499.87
  4. Step 4: Simplify right side
    18,881.75x = 273,593,642.61
  5. Step 5: Solve for x
    x = 273,593,642.61/18,881.75
  6. Step 6: Final answer
    x = 14,489.85

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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.