Home / 12,128,053.15-18,192,079.73-11,888,904.70

Finding the Fourth Proportional to 12,128,053.15, 18,192,079.73 and 11,888,904.70

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Solution

The fourth proportional to 12,128,053.15, 18,192,079.73 and 11,888,904.70 is: 17,833,357.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,053.15 : 18,192,079.73 = 11,888,904.70 : x
  2. Step 2: Convert to fraction form
    12,128,053.15/18,192,079.73 = 11,888,904.70/x
  3. Step 3: Cross multiply
    12,128,053.15x = 18,192,079.73 × 11,888,904.70
  4. Step 4: Simplify right side
    12,128,053.15x = 216,283,902,204,771.72
  5. Step 5: Solve for x
    x = 216,283,902,204,771.72/12,128,053.15
  6. Step 6: Final answer
    x = 17,833,357.05

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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.