Home / 27,621.57-38,114.92-15,520.13

Finding the Fourth Proportional to 27,621.57, 38,114.92 and 15,520.13

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Solution

The fourth proportional to 27,621.57, 38,114.92 and 15,520.13 is: 21,416.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,621.57 : 38,114.92 = 15,520.13 : x
  2. Step 2: Convert to fraction form
    27,621.57/38,114.92 = 15,520.13/x
  3. Step 3: Cross multiply
    27,621.57x = 38,114.92 × 15,520.13
  4. Step 4: Simplify right side
    27,621.57x = 591,548,245.16
  5. Step 5: Solve for x
    x = 591,548,245.16/27,621.57
  6. Step 6: Final answer
    x = 21,416.17

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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.