Home / 12,462.99-17,189.21-7,987.16

Finding the Fourth Proportional to 12,462.99, 17,189.21 and 7,987.16

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Solution

The fourth proportional to 12,462.99, 17,189.21 and 7,987.16 is: 11,016.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,462.99 : 17,189.21 = 7,987.16 : x
  2. Step 2: Convert to fraction form
    12,462.99/17,189.21 = 7,987.16/x
  3. Step 3: Cross multiply
    12,462.99x = 17,189.21 × 7,987.16
  4. Step 4: Simplify right side
    12,462.99x = 137,292,930.61
  5. Step 5: Solve for x
    x = 137,292,930.61/12,462.99
  6. Step 6: Final answer
    x = 11,016.05

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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.