Home / 18,787.47-25,931.34-11,238.27

Finding the Fourth Proportional to 18,787.47, 25,931.34 and 11,238.27

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Solution

The fourth proportional to 18,787.47, 25,931.34 and 11,238.27 is: 15,511.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,787.47 : 25,931.34 = 11,238.27 : x
  2. Step 2: Convert to fraction form
    18,787.47/25,931.34 = 11,238.27/x
  3. Step 3: Cross multiply
    18,787.47x = 25,931.34 × 11,238.27
  4. Step 4: Simplify right side
    18,787.47x = 291,423,400.38
  5. Step 5: Solve for x
    x = 291,423,400.38/18,787.47
  6. Step 6: Final answer
    x = 15,511.58

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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.