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Finding the Fourth Proportional to 25,957.08, 38,931.96 and 8,427.12

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Solution

The fourth proportional to 25,957.08, 38,931.96 and 8,427.12 is: 12,639.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,957.08 : 38,931.96 = 8,427.12 : x
  2. Step 2: Convert to fraction form
    25,957.08/38,931.96 = 8,427.12/x
  3. Step 3: Cross multiply
    25,957.08x = 38,931.96 × 8,427.12
  4. Step 4: Simplify right side
    25,957.08x = 328,084,298.76
  5. Step 5: Solve for x
    x = 328,084,298.76/25,957.08
  6. Step 6: Final answer
    x = 12,639.49

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