Home / 27,787.08-38,348.30-15,850.68

Finding the Fourth Proportional to 27,787.08, 38,348.30 and 15,850.68

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Solution

The fourth proportional to 27,787.08, 38,348.30 and 15,850.68 is: 21,875.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,787.08 : 38,348.30 = 15,850.68 : x
  2. Step 2: Convert to fraction form
    27,787.08/38,348.30 = 15,850.68/x
  3. Step 3: Cross multiply
    27,787.08x = 38,348.30 × 15,850.68
  4. Step 4: Simplify right side
    27,787.08x = 607,846,631.84
  5. Step 5: Solve for x
    x = 607,846,631.84/27,787.08
  6. Step 6: Final answer
    x = 21,875.15

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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.