Home / 12,731.80-17,574.78-8,260.60

Finding the Fourth Proportional to 12,731.80, 17,574.78 and 8,260.60

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Solution

The fourth proportional to 12,731.80, 17,574.78 and 8,260.60 is: 11,402.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,731.80 : 17,574.78 = 8,260.60 : x
  2. Step 2: Convert to fraction form
    12,731.80/17,574.78 = 8,260.60/x
  3. Step 3: Cross multiply
    12,731.80x = 17,574.78 × 8,260.60
  4. Step 4: Simplify right side
    12,731.80x = 145,178,227.67
  5. Step 5: Solve for x
    x = 145,178,227.67/12,731.80
  6. Step 6: Final answer
    x = 11,402.80

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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.