Home / 12,915,267.18-19,372,924.89-12,126,077.16

Finding the Fourth Proportional to 12,915,267.18, 19,372,924.89 and 12,126,077.16

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Solution

The fourth proportional to 12,915,267.18, 19,372,924.89 and 12,126,077.16 is: 18,189,138.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,915,267.18 : 19,372,924.89 = 12,126,077.16 : x
  2. Step 2: Convert to fraction form
    12,915,267.18/19,372,924.89 = 12,126,077.16/x
  3. Step 3: Cross multiply
    12,915,267.18x = 19,372,924.89 × 12,126,077.16
  4. Step 4: Simplify right side
    12,915,267.18x = 234,917,582,031,024.53
  5. Step 5: Solve for x
    x = 234,917,582,031,024.53/12,915,267.18
  6. Step 6: Final answer
    x = 18,189,138.39

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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.