Home / 12,557.28-17,331.36-8,080.32

Finding the Fourth Proportional to 12,557.28, 17,331.36 and 8,080.32

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Solution

The fourth proportional to 12,557.28, 17,331.36 and 8,080.32 is: 11,152.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,557.28 : 17,331.36 = 8,080.32 : x
  2. Step 2: Convert to fraction form
    12,557.28/17,331.36 = 8,080.32/x
  3. Step 3: Cross multiply
    12,557.28x = 17,331.36 × 8,080.32
  4. Step 4: Simplify right side
    12,557.28x = 140,042,934.84
  5. Step 5: Solve for x
    x = 140,042,934.84/12,557.28
  6. Step 6: Final answer
    x = 11,152.33

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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.