Home / 27,966.50-38,593.78-15,390.98

Finding the Fourth Proportional to 27,966.50, 38,593.78 and 15,390.98

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Solution

The fourth proportional to 27,966.50, 38,593.78 and 15,390.98 is: 21,239.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,966.50 : 38,593.78 = 15,390.98 : x
  2. Step 2: Convert to fraction form
    27,966.50/38,593.78 = 15,390.98/x
  3. Step 3: Cross multiply
    27,966.50x = 38,593.78 × 15,390.98
  4. Step 4: Simplify right side
    27,966.50x = 593,996,096.10
  5. Step 5: Solve for x
    x = 593,996,096.10/27,966.50
  6. Step 6: Final answer
    x = 21,239.56

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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.