Home / 27,680.78-38,199.27-15,744.10

Finding the Fourth Proportional to 27,680.78, 38,199.27 and 15,744.10

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Solution

The fourth proportional to 27,680.78, 38,199.27 and 15,744.10 is: 21,726.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,680.78 : 38,199.27 = 15,744.10 : x
  2. Step 2: Convert to fraction form
    27,680.78/38,199.27 = 15,744.10/x
  3. Step 3: Cross multiply
    27,680.78x = 38,199.27 × 15,744.10
  4. Step 4: Simplify right side
    27,680.78x = 601,413,126.81
  5. Step 5: Solve for x
    x = 601,413,126.81/27,680.78
  6. Step 6: Final answer
    x = 21,726.74

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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.