Home / 27,787.62-38,346.51-15,851.14

Finding the Fourth Proportional to 27,787.62, 38,346.51 and 15,851.14

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Solution

The fourth proportional to 27,787.62, 38,346.51 and 15,851.14 is: 21,874.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,787.62 : 38,346.51 = 15,851.14 : x
  2. Step 2: Convert to fraction form
    27,787.62/38,346.51 = 15,851.14/x
  3. Step 3: Cross multiply
    27,787.62x = 38,346.51 × 15,851.14
  4. Step 4: Simplify right side
    27,787.62x = 607,835,898.52
  5. Step 5: Solve for x
    x = 607,835,898.52/27,787.62
  6. Step 6: Final answer
    x = 21,874.34

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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.