Home / 11,987.90-16,532.53-7,512.13

Finding the Fourth Proportional to 11,987.90, 16,532.53 and 7,512.13

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Solution

The fourth proportional to 11,987.90, 16,532.53 and 7,512.13 is: 10,359.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.90 : 16,532.53 = 7,512.13 : x
  2. Step 2: Convert to fraction form
    11,987.90/16,532.53 = 7,512.13/x
  3. Step 3: Cross multiply
    11,987.90x = 16,532.53 × 7,512.13
  4. Step 4: Simplify right side
    11,987.90x = 124,194,514.59
  5. Step 5: Solve for x
    x = 124,194,514.59/11,987.90
  6. Step 6: Final answer
    x = 10,359.99

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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.