Home / 12,169.22-16,779.51-8,987.13

Finding the Fourth Proportional to 12,169.22, 16,779.51 and 8,987.13

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Solution

The fourth proportional to 12,169.22, 16,779.51 and 8,987.13 is: 12,391.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,169.22 : 16,779.51 = 8,987.13 : x
  2. Step 2: Convert to fraction form
    12,169.22/16,779.51 = 8,987.13/x
  3. Step 3: Cross multiply
    12,169.22x = 16,779.51 × 8,987.13
  4. Step 4: Simplify right side
    12,169.22x = 150,799,637.71
  5. Step 5: Solve for x
    x = 150,799,637.71/12,169.22
  6. Step 6: Final answer
    x = 12,391.90

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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.