Home / 13,421,593.04-18,520,660.60-7,540,766.76

Finding the Fourth Proportional to 13,421,593.04, 18,520,660.60 and 7,540,766.76

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Solution

The fourth proportional to 13,421,593.04, 18,520,660.60 and 7,540,766.76 is: 10,405,618.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421,593.04 : 18,520,660.60 = 7,540,766.76 : x
  2. Step 2: Convert to fraction form
    13,421,593.04/18,520,660.60 = 7,540,766.76/x
  3. Step 3: Cross multiply
    13,421,593.04x = 18,520,660.60 × 7,540,766.76
  4. Step 4: Simplify right side
    13,421,593.04x = 139,659,981,825,721.66
  5. Step 5: Solve for x
    x = 139,659,981,825,721.66/13,421,593.04
  6. Step 6: Final answer
    x = 10,405,618.87

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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.