Home / 27,729.96-38,267.28-15,154.80

Finding the Fourth Proportional to 27,729.96, 38,267.28 and 15,154.80

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Solution

The fourth proportional to 27,729.96, 38,267.28 and 15,154.80 is: 20,913.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,729.96 : 38,267.28 = 15,154.80 : x
  2. Step 2: Convert to fraction form
    27,729.96/38,267.28 = 15,154.80/x
  3. Step 3: Cross multiply
    27,729.96x = 38,267.28 × 15,154.80
  4. Step 4: Simplify right side
    27,729.96x = 579,932,974.94
  5. Step 5: Solve for x
    x = 579,932,974.94/27,729.96
  6. Step 6: Final answer
    x = 20,913.59

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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.