Home / 19,912.28-27,478.31-10,959.79

Finding the Fourth Proportional to 19,912.28, 27,478.31 and 10,959.79

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Solution

The fourth proportional to 19,912.28, 27,478.31 and 10,959.79 is: 15,124.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,912.28 : 27,478.31 = 10,959.79 : x
  2. Step 2: Convert to fraction form
    19,912.28/27,478.31 = 10,959.79/x
  3. Step 3: Cross multiply
    19,912.28x = 27,478.31 × 10,959.79
  4. Step 4: Simplify right side
    19,912.28x = 301,156,435.18
  5. Step 5: Solve for x
    x = 301,156,435.18/19,912.28
  6. Step 6: Final answer
    x = 15,124.16

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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.