Home / 18,927,720.10-28,380,208.79-7,399,456.72

Finding the Fourth Proportional to 18,927,720.10, 28,380,208.79 and 7,399,456.72

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Solution

The fourth proportional to 18,927,720.10, 28,380,208.79 and 7,399,456.72 is: 11,094,739.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,927,720.10 : 28,380,208.79 = 7,399,456.72 : x
  2. Step 2: Convert to fraction form
    18,927,720.10/28,380,208.79 = 7,399,456.72/x
  3. Step 3: Cross multiply
    18,927,720.10x = 28,380,208.79 × 7,399,456.72
  4. Step 4: Simplify right side
    18,927,720.10x = 209,998,126,609,171.28
  5. Step 5: Solve for x
    x = 209,998,126,609,171.28/18,927,720.10
  6. Step 6: Final answer
    x = 11,094,739.65

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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.