Home / 12,448.60-17,178.40-7,732.80

Finding the Fourth Proportional to 12,448.60, 17,178.40 and 7,732.80

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Solution

The fourth proportional to 12,448.60, 17,178.40 and 7,732.80 is: 10,670.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,448.60 : 17,178.40 = 7,732.80 : x
  2. Step 2: Convert to fraction form
    12,448.60/17,178.40 = 7,732.80/x
  3. Step 3: Cross multiply
    12,448.60x = 17,178.40 × 7,732.80
  4. Step 4: Simplify right side
    12,448.60x = 132,837,131.52
  5. Step 5: Solve for x
    x = 132,837,131.52/12,448.60
  6. Step 6: Final answer
    x = 10,670.85

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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.