Home / 11,987.16-16,542.12-6,681.96

Finding the Fourth Proportional to 11,987.16, 16,542.12 and 6,681.96

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Solution

The fourth proportional to 11,987.16, 16,542.12 and 6,681.96 is: 9,221.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.16 : 16,542.12 = 6,681.96 : x
  2. Step 2: Convert to fraction form
    11,987.16/16,542.12 = 6,681.96/x
  3. Step 3: Cross multiply
    11,987.16x = 16,542.12 × 6,681.96
  4. Step 4: Simplify right side
    11,987.16x = 110,533,809.21
  5. Step 5: Solve for x
    x = 110,533,809.21/11,987.16
  6. Step 6: Final answer
    x = 9,221.02

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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.