Home / 13,681,632.85-18,880,874.22-7,487,217.79

Finding the Fourth Proportional to 13,681,632.85, 18,880,874.22 and 7,487,217.79

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Solution

The fourth proportional to 13,681,632.85, 18,880,874.22 and 7,487,217.79 is: 10,332,481.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,681,632.85 : 18,880,874.22 = 7,487,217.79 : x
  2. Step 2: Convert to fraction form
    13,681,632.85/18,880,874.22 = 7,487,217.79/x
  3. Step 3: Cross multiply
    13,681,632.85x = 18,880,874.22 × 7,487,217.79
  4. Step 4: Simplify right side
    13,681,632.85x = 141,365,217,350,736.38
  5. Step 5: Solve for x
    x = 141,365,217,350,736.38/13,681,632.85
  6. Step 6: Final answer
    x = 10,332,481.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.