Home / 15,930.29-21,982.96-8,760.07

Finding the Fourth Proportional to 15,930.29, 21,982.96 and 8,760.07

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Solution

The fourth proportional to 15,930.29, 21,982.96 and 8,760.07 is: 12,088.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,930.29 : 21,982.96 = 8,760.07 : x
  2. Step 2: Convert to fraction form
    15,930.29/21,982.96 = 8,760.07/x
  3. Step 3: Cross multiply
    15,930.29x = 21,982.96 × 8,760.07
  4. Step 4: Simplify right side
    15,930.29x = 192,572,268.41
  5. Step 5: Solve for x
    x = 192,572,268.41/15,930.29
  6. Step 6: Final answer
    x = 12,088.43

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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.