Home / 17,508.80-26,258.40-7,121.60

Finding the Fourth Proportional to 17,508.80, 26,258.40 and 7,121.60

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Solution

The fourth proportional to 17,508.80, 26,258.40 and 7,121.60 is: 10,680.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,508.80 : 26,258.40 = 7,121.60 : x
  2. Step 2: Convert to fraction form
    17,508.80/26,258.40 = 7,121.60/x
  3. Step 3: Cross multiply
    17,508.80x = 26,258.40 × 7,121.60
  4. Step 4: Simplify right side
    17,508.80x = 187,001,821.44
  5. Step 5: Solve for x
    x = 187,001,821.44/17,508.80
  6. Step 6: Final answer
    x = 10,680.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.