Home / 21,281,620.18-29,368,725.52-11,989,301.74

Finding the Fourth Proportional to 21,281,620.18, 29,368,725.52 and 11,989,301.74

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Solution

The fourth proportional to 21,281,620.18, 29,368,725.52 and 11,989,301.74 is: 16,545,286.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,281,620.18 : 29,368,725.52 = 11,989,301.74 : x
  2. Step 2: Convert to fraction form
    21,281,620.18/29,368,725.52 = 11,989,301.74/x
  3. Step 3: Cross multiply
    21,281,620.18x = 29,368,725.52 × 11,989,301.74
  4. Step 4: Simplify right side
    21,281,620.18x = 352,110,511,978,518.38
  5. Step 5: Solve for x
    x = 352,110,511,978,518.38/21,281,620.18
  6. Step 6: Final answer
    x = 16,545,286.92

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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.