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Finding the Fourth Proportional to 25,956.81, 38,931.51 and 8,185.17

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Solution

The fourth proportional to 25,956.81, 38,931.51 and 8,185.17 is: 12,276.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,956.81 : 38,931.51 = 8,185.17 : x
  2. Step 2: Convert to fraction form
    25,956.81/38,931.51 = 8,185.17/x
  3. Step 3: Cross multiply
    25,956.81x = 38,931.51 × 8,185.17
  4. Step 4: Simplify right side
    25,956.81x = 318,661,027.71
  5. Step 5: Solve for x
    x = 318,661,027.71/25,956.81
  6. Step 6: Final answer
    x = 12,276.59

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1.5x scale

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.