Home / 27,729.12-38,265.76-15,153.76

Finding the Fourth Proportional to 27,729.12, 38,265.76 and 15,153.76

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Solution

The fourth proportional to 27,729.12, 38,265.76 and 15,153.76 is: 20,911.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,729.12 : 38,265.76 = 15,153.76 : x
  2. Step 2: Convert to fraction form
    27,729.12/38,265.76 = 15,153.76/x
  3. Step 3: Cross multiply
    27,729.12x = 38,265.76 × 15,153.76
  4. Step 4: Simplify right side
    27,729.12x = 579,870,143.26
  5. Step 5: Solve for x
    x = 579,870,143.26/27,729.12
  6. Step 6: Final answer
    x = 20,911.96

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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.