Home / 15,790.60-21,790.92-8,717.04

Finding the Fourth Proportional to 15,790.60, 21,790.92 and 8,717.04

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Solution

The fourth proportional to 15,790.60, 21,790.92 and 8,717.04 is: 12,029.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,790.60 : 21,790.92 = 8,717.04 : x
  2. Step 2: Convert to fraction form
    15,790.60/21,790.92 = 8,717.04/x
  3. Step 3: Cross multiply
    15,790.60x = 21,790.92 × 8,717.04
  4. Step 4: Simplify right side
    15,790.60x = 189,952,321.28
  5. Step 5: Solve for x
    x = 189,952,321.28/15,790.60
  6. Step 6: Final answer
    x = 12,029.46

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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.