Home / 11,987.40-16,542.22-7,513.56

Finding the Fourth Proportional to 11,987.40, 16,542.22 and 7,513.56

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Solution

The fourth proportional to 11,987.40, 16,542.22 and 7,513.56 is: 10,368.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.40 : 16,542.22 = 7,513.56 : x
  2. Step 2: Convert to fraction form
    11,987.40/16,542.22 = 7,513.56/x
  3. Step 3: Cross multiply
    11,987.40x = 16,542.22 × 7,513.56
  4. Step 4: Simplify right side
    11,987.40x = 124,290,962.50
  5. Step 5: Solve for x
    x = 124,290,962.50/11,987.40
  6. Step 6: Final answer
    x = 10,368.47

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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.