Home / 12,479.30-18,610.70-10,642.22

Finding the Fourth Proportional to 12,479.30, 18,610.70 and 10,642.22

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Solution

The fourth proportional to 12,479.30, 18,610.70 and 10,642.22 is: 15,871.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479.30 : 18,610.70 = 10,642.22 : x
  2. Step 2: Convert to fraction form
    12,479.30/18,610.70 = 10,642.22/x
  3. Step 3: Cross multiply
    12,479.30x = 18,610.70 × 10,642.22
  4. Step 4: Simplify right side
    12,479.30x = 198,059,177.07
  5. Step 5: Solve for x
    x = 198,059,177.07/12,479.30
  6. Step 6: Final answer
    x = 15,871.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.