Home / 12,551.30-17,320.10-7,245.80

Finding the Fourth Proportional to 12,551.30, 17,320.10 and 7,245.80

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Solution

The fourth proportional to 12,551.30, 17,320.10 and 7,245.80 is: 9,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,551.30 : 17,320.10 = 7,245.80 : x
  2. Step 2: Convert to fraction form
    12,551.30/17,320.10 = 7,245.80/x
  3. Step 3: Cross multiply
    12,551.30x = 17,320.10 × 7,245.80
  4. Step 4: Simplify right side
    12,551.30x = 125,497,980.58
  5. Step 5: Solve for x
    x = 125,497,980.58/12,551.30
  6. Step 6: Final answer
    x = 9,998.80

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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.