Home / 18,783,642.60-28,159,061.40-7,276,960.80

Finding the Fourth Proportional to 18,783,642.60, 28,159,061.40 and 7,276,960.80

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Solution

The fourth proportional to 18,783,642.60, 28,159,061.40 and 7,276,960.80 is: 10,909,086.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,783,642.60 : 28,159,061.40 = 7,276,960.80 : x
  2. Step 2: Convert to fraction form
    18,783,642.60/28,159,061.40 = 7,276,960.80/x
  3. Step 3: Cross multiply
    18,783,642.60x = 28,159,061.40 × 7,276,960.80
  4. Step 4: Simplify right side
    18,783,642.60x = 204,912,385,972,593.09
  5. Step 5: Solve for x
    x = 204,912,385,972,593.09/18,783,642.60
  6. Step 6: Final answer
    x = 10,909,086.72

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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.