Home / 11,508.80-15,881.68-7,040.08

Finding the Fourth Proportional to 11,508.80, 15,881.68 and 7,040.08

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Solution

The fourth proportional to 11,508.80, 15,881.68 and 7,040.08 is: 9,715.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,508.80 : 15,881.68 = 7,040.08 : x
  2. Step 2: Convert to fraction form
    11,508.80/15,881.68 = 7,040.08/x
  3. Step 3: Cross multiply
    11,508.80x = 15,881.68 × 7,040.08
  4. Step 4: Simplify right side
    11,508.80x = 111,808,297.73
  5. Step 5: Solve for x
    x = 111,808,297.73/11,508.80
  6. Step 6: Final answer
    x = 9,715.03

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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.