Home / 27,961-38,586.96-15,386.56

Finding the Fourth Proportional to 27,961, 38,586.96 and 15,386.56

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Solution

The fourth proportional to 27,961, 38,586.96 and 15,386.56 is: 21,233.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,961 : 38,586.96 = 15,386.56 : x
  2. Step 2: Convert to fraction form
    27,961/38,586.96 = 15,386.56/x
  3. Step 3: Cross multiply
    27,961x = 38,586.96 × 15,386.56
  4. Step 4: Simplify right side
    27,961x = 593,720,575.26
  5. Step 5: Solve for x
    x = 593,720,575.26/27,961
  6. Step 6: Final answer
    x = 21,233.88

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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.