Home / 27,665.03-38,178-15,089.78

Finding the Fourth Proportional to 27,665.03, 38,178 and 15,089.78

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Solution

The fourth proportional to 27,665.03, 38,178 and 15,089.78 is: 20,824.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,665.03 : 38,178 = 15,089.78 : x
  2. Step 2: Convert to fraction form
    27,665.03/38,178 = 15,089.78/x
  3. Step 3: Cross multiply
    27,665.03x = 38,178 × 15,089.78
  4. Step 4: Simplify right side
    27,665.03x = 576,097,716.29
  5. Step 5: Solve for x
    x = 576,097,716.29/27,665.03
  6. Step 6: Final answer
    x = 20,824.04

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Double scale
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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.