Home / 13,195,859.78-18,209,990.60-7,688,891.72

Finding the Fourth Proportional to 13,195,859.78, 18,209,990.60 and 7,688,891.72

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Solution

The fourth proportional to 13,195,859.78, 18,209,990.60 and 7,688,891.72 is: 10,610,498.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,195,859.78 : 18,209,990.60 = 7,688,891.72 : x
  2. Step 2: Convert to fraction form
    13,195,859.78/18,209,990.60 = 7,688,891.72/x
  3. Step 3: Cross multiply
    13,195,859.78x = 18,209,990.60 × 7,688,891.72
  4. Step 4: Simplify right side
    13,195,859.78x = 140,014,645,981,531.69
  5. Step 5: Solve for x
    x = 140,014,645,981,531.69/13,195,859.78
  6. Step 6: Final answer
    x = 10,610,498.16

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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.