Home / 27,615.66-38,101.23-15,678.78

Finding the Fourth Proportional to 27,615.66, 38,101.23 and 15,678.78

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Solution

The fourth proportional to 27,615.66, 38,101.23 and 15,678.78 is: 21,631.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,615.66 : 38,101.23 = 15,678.78 : x
  2. Step 2: Convert to fraction form
    27,615.66/38,101.23 = 15,678.78/x
  3. Step 3: Cross multiply
    27,615.66x = 38,101.23 × 15,678.78
  4. Step 4: Simplify right side
    27,615.66x = 597,380,802.90
  5. Step 5: Solve for x
    x = 597,380,802.90/27,615.66
  6. Step 6: Final answer
    x = 21,631.96

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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.