Home / 12,126,780.20-18,177,864.78-10,357,081.68

Finding the Fourth Proportional to 12,126,780.20, 18,177,864.78 and 10,357,081.68

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Solution

The fourth proportional to 12,126,780.20, 18,177,864.78 and 10,357,081.68 is: 15,525,112.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126,780.20 : 18,177,864.78 = 10,357,081.68 : x
  2. Step 2: Convert to fraction form
    12,126,780.20/18,177,864.78 = 10,357,081.68/x
  3. Step 3: Cross multiply
    12,126,780.20x = 18,177,864.78 × 10,357,081.68
  4. Step 4: Simplify right side
    12,126,780.20x = 188,269,630,294,455.25
  5. Step 5: Solve for x
    x = 188,269,630,294,455.25/12,126,780.20
  6. Step 6: Final answer
    x = 15,525,112.78

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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.