Home / 27,720.43-38,250.61-15,621.19

Finding the Fourth Proportional to 27,720.43, 38,250.61 and 15,621.19

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Solution

The fourth proportional to 27,720.43, 38,250.61 and 15,621.19 is: 21,555.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,720.43 : 38,250.61 = 15,621.19 : x
  2. Step 2: Convert to fraction form
    27,720.43/38,250.61 = 15,621.19/x
  3. Step 3: Cross multiply
    27,720.43x = 38,250.61 × 15,621.19
  4. Step 4: Simplify right side
    27,720.43x = 597,520,046.43
  5. Step 5: Solve for x
    x = 597,520,046.43/27,720.43
  6. Step 6: Final answer
    x = 21,555.22

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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.