Home / 27,878.86-38,472.19-15,132.07

Finding the Fourth Proportional to 27,878.86, 38,472.19 and 15,132.07

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Solution

The fourth proportional to 27,878.86, 38,472.19 and 15,132.07 is: 20,881.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,878.86 : 38,472.19 = 15,132.07 : x
  2. Step 2: Convert to fraction form
    27,878.86/38,472.19 = 15,132.07/x
  3. Step 3: Cross multiply
    27,878.86x = 38,472.19 × 15,132.07
  4. Step 4: Simplify right side
    27,878.86x = 582,163,708.55
  5. Step 5: Solve for x
    x = 582,163,708.55/27,878.86
  6. Step 6: Final answer
    x = 20,881.91

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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.