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Finding the Fourth Proportional to 25,955.16, 38,932.74 and 8,426.34

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Solution

The fourth proportional to 25,955.16, 38,932.74 and 8,426.34 is: 12,639.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,955.16 : 38,932.74 = 8,426.34 : x
  2. Step 2: Convert to fraction form
    25,955.16/38,932.74 = 8,426.34/x
  3. Step 3: Cross multiply
    25,955.16x = 38,932.74 × 8,426.34
  4. Step 4: Simplify right side
    25,955.16x = 328,060,504.37
  5. Step 5: Solve for x
    x = 328,060,504.37/25,955.16
  6. Step 6: Final answer
    x = 12,639.51

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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.