Home / 12,128,077.90-18,192,116.85-11,888,929.45

Finding the Fourth Proportional to 12,128,077.90, 18,192,116.85 and 11,888,929.45

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Solution

The fourth proportional to 12,128,077.90, 18,192,116.85 and 11,888,929.45 is: 17,833,394.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,077.90 : 18,192,116.85 = 11,888,929.45 : x
  2. Step 2: Convert to fraction form
    12,128,077.90/18,192,116.85 = 11,888,929.45/x
  3. Step 3: Cross multiply
    12,128,077.90x = 18,192,116.85 × 11,888,929.45
  4. Step 4: Simplify right side
    12,128,077.90x = 216,284,793,775,806.25
  5. Step 5: Solve for x
    x = 216,284,793,775,806.25/12,128,077.90
  6. Step 6: Final answer
    x = 17,833,394.18

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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.