Home / 12,425.76-17,148.03-7,121.60

Finding the Fourth Proportional to 12,425.76, 17,148.03 and 7,121.60

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Solution

The fourth proportional to 12,425.76, 17,148.03 and 7,121.60 is: 9,828.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,425.76 : 17,148.03 = 7,121.60 : x
  2. Step 2: Convert to fraction form
    12,425.76/17,148.03 = 7,121.60/x
  3. Step 3: Cross multiply
    12,425.76x = 17,148.03 × 7,121.60
  4. Step 4: Simplify right side
    12,425.76x = 122,121,443.60
  5. Step 5: Solve for x
    x = 122,121,443.60/12,425.76
  6. Step 6: Final answer
    x = 9,828.08

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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.