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Finding the Fourth Proportional to 18,750.50, 25,875.78 and 10,367

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Solution

The fourth proportional to 18,750.50, 25,875.78 and 10,367 is: 14,306.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,750.50 : 25,875.78 = 10,367 : x
  2. Step 2: Convert to fraction form
    18,750.50/25,875.78 = 10,367/x
  3. Step 3: Cross multiply
    18,750.50x = 25,875.78 × 10,367
  4. Step 4: Simplify right side
    18,750.50x = 268,254,211.26
  5. Step 5: Solve for x
    x = 268,254,211.26/18,750.50
  6. Step 6: Final answer
    x = 14,306.51

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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.