Home / 21,780,887.12-30,056,483.25-11,989,418.84

Finding the Fourth Proportional to 21,780,887.12, 30,056,483.25 and 11,989,418.84

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Solution

The fourth proportional to 21,780,887.12, 30,056,483.25 and 11,989,418.84 is: 16,544,769.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,780,887.12 : 30,056,483.25 = 11,989,418.84 : x
  2. Step 2: Convert to fraction form
    21,780,887.12/30,056,483.25 = 11,989,418.84/x
  3. Step 3: Cross multiply
    21,780,887.12x = 30,056,483.25 × 11,989,418.84
  4. Step 4: Simplify right side
    21,780,887.12x = 360,359,766,541,694.44
  5. Step 5: Solve for x
    x = 360,359,766,541,694.44/21,780,887.12
  6. Step 6: Final answer
    x = 16,544,769.94

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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.