Home / 18,308.49-25,262.40-15,787.95

Finding the Fourth Proportional to 18,308.49, 25,262.40 and 15,787.95

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Solution

The fourth proportional to 18,308.49, 25,262.40 and 15,787.95 is: 21,784.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,308.49 : 25,262.40 = 15,787.95 : x
  2. Step 2: Convert to fraction form
    18,308.49/25,262.40 = 15,787.95/x
  3. Step 3: Cross multiply
    18,308.49x = 25,262.40 × 15,787.95
  4. Step 4: Simplify right side
    18,308.49x = 398,841,508.08
  5. Step 5: Solve for x
    x = 398,841,508.08/18,308.49
  6. Step 6: Final answer
    x = 21,784.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.