Home / 27,720.46-38,254.17-15,145.30

Finding the Fourth Proportional to 27,720.46, 38,254.17 and 15,145.30

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Solution

The fourth proportional to 27,720.46, 38,254.17 and 15,145.30 is: 20,900.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,720.46 : 38,254.17 = 15,145.30 : x
  2. Step 2: Convert to fraction form
    27,720.46/38,254.17 = 15,145.30/x
  3. Step 3: Cross multiply
    27,720.46x = 38,254.17 × 15,145.30
  4. Step 4: Simplify right side
    27,720.46x = 579,370,880.90
  5. Step 5: Solve for x
    x = 579,370,880.90/27,720.46
  6. Step 6: Final answer
    x = 20,900.48

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Double scale
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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.