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Finding the Fourth Proportional to 18,741, 25,862.85 and 10,357.50

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Solution

The fourth proportional to 18,741, 25,862.85 and 10,357.50 is: 14,293.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,741 : 25,862.85 = 10,357.50 : x
  2. Step 2: Convert to fraction form
    18,741/25,862.85 = 10,357.50/x
  3. Step 3: Cross multiply
    18,741x = 25,862.85 × 10,357.50
  4. Step 4: Simplify right side
    18,741x = 267,874,468.88
  5. Step 5: Solve for x
    x = 267,874,468.88/18,741
  6. Step 6: Final answer
    x = 14,293.50

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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.