Home / 21,034.62-31,547.97-7,884.18

Finding the Fourth Proportional to 21,034.62, 31,547.97 and 7,884.18

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Solution

The fourth proportional to 21,034.62, 31,547.97 and 7,884.18 is: 11,824.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,034.62 : 31,547.97 = 7,884.18 : x
  2. Step 2: Convert to fraction form
    21,034.62/31,547.97 = 7,884.18/x
  3. Step 3: Cross multiply
    21,034.62x = 31,547.97 × 7,884.18
  4. Step 4: Simplify right side
    21,034.62x = 248,729,874.11
  5. Step 5: Solve for x
    x = 248,729,874.11/21,034.62
  6. Step 6: Final answer
    x = 11,824.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.