Home / 12,515.96-17,270.31-7,479.11

Finding the Fourth Proportional to 12,515.96, 17,270.31 and 7,479.11

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Solution

The fourth proportional to 12,515.96, 17,270.31 and 7,479.11 is: 10,320.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,515.96 : 17,270.31 = 7,479.11 : x
  2. Step 2: Convert to fraction form
    12,515.96/17,270.31 = 7,479.11/x
  3. Step 3: Cross multiply
    12,515.96x = 17,270.31 × 7,479.11
  4. Step 4: Simplify right side
    12,515.96x = 129,166,548.22
  5. Step 5: Solve for x
    x = 129,166,548.22/12,515.96
  6. Step 6: Final answer
    x = 10,320.15

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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.