Home / 13,124.80-19,708.80-8,761.60

Finding the Fourth Proportional to 13,124.80, 19,708.80 and 8,761.60

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Solution

The fourth proportional to 13,124.80, 19,708.80 and 8,761.60 is: 13,156.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,124.80 : 19,708.80 = 8,761.60 : x
  2. Step 2: Convert to fraction form
    13,124.80/19,708.80 = 8,761.60/x
  3. Step 3: Cross multiply
    13,124.80x = 19,708.80 × 8,761.60
  4. Step 4: Simplify right side
    13,124.80x = 172,680,622.08
  5. Step 5: Solve for x
    x = 172,680,622.08/13,124.80
  6. Step 6: Final answer
    x = 13,156.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.