Home / 12,127,979.80-18,191,969.70-11,251,102.15

Finding the Fourth Proportional to 12,127,979.80, 18,191,969.70 and 11,251,102.15

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Solution

The fourth proportional to 12,127,979.80, 18,191,969.70 and 11,251,102.15 is: 16,876,653.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127,979.80 : 18,191,969.70 = 11,251,102.15 : x
  2. Step 2: Convert to fraction form
    12,127,979.80/18,191,969.70 = 11,251,102.15/x
  3. Step 3: Cross multiply
    12,127,979.80x = 18,191,969.70 × 11,251,102.15
  4. Step 4: Simplify right side
    12,127,979.80x = 204,679,709,404,404.84
  5. Step 5: Solve for x
    x = 204,679,709,404,404.84/12,127,979.80
  6. Step 6: Final answer
    x = 16,876,653.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.