Home / 12,426.60-17,148.77-7,121.73

Finding the Fourth Proportional to 12,426.60, 17,148.77 and 7,121.73

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Solution

The fourth proportional to 12,426.60, 17,148.77 and 7,121.73 is: 9,828.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,426.60 : 17,148.77 = 7,121.73 : x
  2. Step 2: Convert to fraction form
    12,426.60/17,148.77 = 7,121.73/x
  3. Step 3: Cross multiply
    12,426.60x = 17,148.77 × 7,121.73
  4. Step 4: Simplify right side
    12,426.60x = 122,128,909.77
  5. Step 5: Solve for x
    x = 122,128,909.77/12,426.60
  6. Step 6: Final answer
    x = 9,828.02

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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.