Home / 12,128,411.80-18,192,617.70-11,251,534.15

Finding the Fourth Proportional to 12,128,411.80, 18,192,617.70 and 11,251,534.15

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Solution

The fourth proportional to 12,128,411.80, 18,192,617.70 and 11,251,534.15 is: 16,877,301.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,411.80 : 18,192,617.70 = 11,251,534.15 : x
  2. Step 2: Convert to fraction form
    12,128,411.80/18,192,617.70 = 11,251,534.15/x
  3. Step 3: Cross multiply
    12,128,411.80x = 18,192,617.70 × 11,251,534.15
  4. Step 4: Simplify right side
    12,128,411.80x = 204,694,859,329,444.47
  5. Step 5: Solve for x
    x = 204,694,859,329,444.47/12,128,411.80
  6. Step 6: Final answer
    x = 16,877,301.23

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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.