Home / 27,720.38-38,254.13-15,145.13

Finding the Fourth Proportional to 27,720.38, 38,254.13 and 15,145.13

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Solution

The fourth proportional to 27,720.38, 38,254.13 and 15,145.13 is: 20,900.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,720.38 : 38,254.13 = 15,145.13 : x
  2. Step 2: Convert to fraction form
    27,720.38/38,254.13 = 15,145.13/x
  3. Step 3: Cross multiply
    27,720.38x = 38,254.13 × 15,145.13
  4. Step 4: Simplify right side
    27,720.38x = 579,363,504.89
  5. Step 5: Solve for x
    x = 579,363,504.89/27,720.38
  6. Step 6: Final answer
    x = 20,900.28

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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.