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Finding the Fourth Proportional to 18,801.28, 25,945.92 and 10,417.92

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Solution

The fourth proportional to 18,801.28, 25,945.92 and 10,417.92 is: 14,376.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,801.28 : 25,945.92 = 10,417.92 : x
  2. Step 2: Convert to fraction form
    18,801.28/25,945.92 = 10,417.92/x
  3. Step 3: Cross multiply
    18,801.28x = 25,945.92 × 10,417.92
  4. Step 4: Simplify right side
    18,801.28x = 270,302,518.89
  5. Step 5: Solve for x
    x = 270,302,518.89/18,801.28
  6. Step 6: Final answer
    x = 14,376.81

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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.