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Finding the Fourth Proportional to 18,751.50, 25,877.07 and 10,368.78

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Solution

The fourth proportional to 18,751.50, 25,877.07 and 10,368.78 is: 14,308.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,751.50 : 25,877.07 = 10,368.78 : x
  2. Step 2: Convert to fraction form
    18,751.50/25,877.07 = 10,368.78/x
  3. Step 3: Cross multiply
    18,751.50x = 25,877.07 × 10,368.78
  4. Step 4: Simplify right side
    18,751.50x = 268,313,645.87
  5. Step 5: Solve for x
    x = 268,313,645.87/18,751.50
  6. Step 6: Final answer
    x = 14,308.92

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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.