Home / 27,812.72-38,389.60-15,882.56

Finding the Fourth Proportional to 27,812.72, 38,389.60 and 15,882.56

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Solution

The fourth proportional to 27,812.72, 38,389.60 and 15,882.56 is: 21,922.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,812.72 : 38,389.60 = 15,882.56 : x
  2. Step 2: Convert to fraction form
    27,812.72/38,389.60 = 15,882.56/x
  3. Step 3: Cross multiply
    27,812.72x = 38,389.60 × 15,882.56
  4. Step 4: Simplify right side
    27,812.72x = 609,725,125.38
  5. Step 5: Solve for x
    x = 609,725,125.38/27,812.72
  6. Step 6: Final answer
    x = 21,922.53

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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.