Home / 12,471.23-17,206.71-7,689.56

Finding the Fourth Proportional to 12,471.23, 17,206.71 and 7,689.56

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Solution

The fourth proportional to 12,471.23, 17,206.71 and 7,689.56 is: 10,609.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,471.23 : 17,206.71 = 7,689.56 : x
  2. Step 2: Convert to fraction form
    12,471.23/17,206.71 = 7,689.56/x
  3. Step 3: Cross multiply
    12,471.23x = 17,206.71 × 7,689.56
  4. Step 4: Simplify right side
    12,471.23x = 132,312,028.95
  5. Step 5: Solve for x
    x = 132,312,028.95/12,471.23
  6. Step 6: Final answer
    x = 10,609.38

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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.