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Finding the Fourth Proportional to 25,956.93, 38,947.68 and 15,447.72

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Solution

The fourth proportional to 25,956.93, 38,947.68 and 15,447.72 is: 23,178.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,956.93 : 38,947.68 = 15,447.72 : x
  2. Step 2: Convert to fraction form
    25,956.93/38,947.68 = 15,447.72/x
  3. Step 3: Cross multiply
    25,956.93x = 38,947.68 × 15,447.72
  4. Step 4: Simplify right side
    25,956.93x = 601,652,855.29
  5. Step 5: Solve for x
    x = 601,652,855.29/25,956.93
  6. Step 6: Final answer
    x = 23,178.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.