Home / 25,787.81-38,612.25-16,881.05

Finding the Fourth Proportional to 25,787.81, 38,612.25 and 16,881.05

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Solution

The fourth proportional to 25,787.81, 38,612.25 and 16,881.05 is: 25,276.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,787.81 : 38,612.25 = 16,881.05 : x
  2. Step 2: Convert to fraction form
    25,787.81/38,612.25 = 16,881.05/x
  3. Step 3: Cross multiply
    25,787.81x = 38,612.25 × 16,881.05
  4. Step 4: Simplify right side
    25,787.81x = 651,815,419.39
  5. Step 5: Solve for x
    x = 651,815,419.39/25,787.81
  6. Step 6: Final answer
    x = 25,276.10

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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.