Home / 27,787.50-38,346.78-15,212.28

Finding the Fourth Proportional to 27,787.50, 38,346.78 and 15,212.28

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Solution

The fourth proportional to 27,787.50, 38,346.78 and 15,212.28 is: 20,992.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,787.50 : 38,346.78 = 15,212.28 : x
  2. Step 2: Convert to fraction form
    27,787.50/38,346.78 = 15,212.28/x
  3. Step 3: Cross multiply
    27,787.50x = 38,346.78 × 15,212.28
  4. Step 4: Simplify right side
    27,787.50x = 583,341,954.46
  5. Step 5: Solve for x
    x = 583,341,954.46/27,787.50
  6. Step 6: Final answer
    x = 20,992.96

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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.