Home / 13,451,713.20-20,177,569.80-7,783,009.20

Finding the Fourth Proportional to 13,451,713.20, 20,177,569.80 and 7,783,009.20

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Solution

The fourth proportional to 13,451,713.20, 20,177,569.80 and 7,783,009.20 is: 11,674,513.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,451,713.20 : 20,177,569.80 = 7,783,009.20 : x
  2. Step 2: Convert to fraction form
    13,451,713.20/20,177,569.80 = 7,783,009.20/x
  3. Step 3: Cross multiply
    13,451,713.20x = 20,177,569.80 × 7,783,009.20
  4. Step 4: Simplify right side
    13,451,713.20x = 157,042,211,387,042.16
  5. Step 5: Solve for x
    x = 157,042,211,387,042.16/13,451,713.20
  6. Step 6: Final answer
    x = 11,674,513.80

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Similar ratio
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1.5x scale

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.