Home / 18,787.08-25,921.71-11,126.49

Finding the Fourth Proportional to 18,787.08, 25,921.71 and 11,126.49

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Solution

The fourth proportional to 18,787.08, 25,921.71 and 11,126.49 is: 15,351.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,787.08 : 25,921.71 = 11,126.49 : x
  2. Step 2: Convert to fraction form
    18,787.08/25,921.71 = 11,126.49/x
  3. Step 3: Cross multiply
    18,787.08x = 25,921.71 × 11,126.49
  4. Step 4: Simplify right side
    18,787.08x = 288,417,647.10
  5. Step 5: Solve for x
    x = 288,417,647.10/18,787.08
  6. Step 6: Final answer
    x = 15,351.91

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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.