Home / 12,119.13-16,720.38-9,877.14

Finding the Fourth Proportional to 12,119.13, 16,720.38 and 9,877.14

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Solution

The fourth proportional to 12,119.13, 16,720.38 and 9,877.14 is: 13,627.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,119.13 : 16,720.38 = 9,877.14 : x
  2. Step 2: Convert to fraction form
    12,119.13/16,720.38 = 9,877.14/x
  3. Step 3: Cross multiply
    12,119.13x = 16,720.38 × 9,877.14
  4. Step 4: Simplify right side
    12,119.13x = 165,149,534.11
  5. Step 5: Solve for x
    x = 165,149,534.11/12,119.13
  6. Step 6: Final answer
    x = 13,627.18

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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.