Home / 28,948.31-43,422.78-10,215.18

Finding the Fourth Proportional to 28,948.31, 43,422.78 and 10,215.18

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Solution

The fourth proportional to 28,948.31, 43,422.78 and 10,215.18 is: 15,322.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,948.31 : 43,422.78 = 10,215.18 : x
  2. Step 2: Convert to fraction form
    28,948.31/43,422.78 = 10,215.18/x
  3. Step 3: Cross multiply
    28,948.31x = 43,422.78 × 10,215.18
  4. Step 4: Simplify right side
    28,948.31x = 443,571,513.80
  5. Step 5: Solve for x
    x = 443,571,513.80/28,948.31
  6. Step 6: Final answer
    x = 15,322.88

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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.