Home / 27,680.57-38,199.29-15,105.32

Finding the Fourth Proportional to 27,680.57, 38,199.29 and 15,105.32

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Solution

The fourth proportional to 27,680.57, 38,199.29 and 15,105.32 is: 20,845.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,680.57 : 38,199.29 = 15,105.32 : x
  2. Step 2: Convert to fraction form
    27,680.57/38,199.29 = 15,105.32/x
  3. Step 3: Cross multiply
    27,680.57x = 38,199.29 × 15,105.32
  4. Step 4: Simplify right side
    27,680.57x = 577,012,232.70
  5. Step 5: Solve for x
    x = 577,012,232.70/27,680.57
  6. Step 6: Final answer
    x = 20,845.39

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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.