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Finding the Fourth Proportional to 12,368.49, 17,062.65 and 11,891.19

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Solution

The fourth proportional to 12,368.49, 17,062.65 and 11,891.19 is: 16,404.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,368.49 : 17,062.65 = 11,891.19 : x
  2. Step 2: Convert to fraction form
    12,368.49/17,062.65 = 11,891.19/x
  3. Step 3: Cross multiply
    12,368.49x = 17,062.65 × 11,891.19
  4. Step 4: Simplify right side
    12,368.49x = 202,895,213.05
  5. Step 5: Solve for x
    x = 202,895,213.05/12,368.49
  6. Step 6: Final answer
    x = 16,404.20

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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.