Home / 18,703,917.40-28,055,876.10-15,341,920.60

Finding the Fourth Proportional to 18,703,917.40, 28,055,876.10 and 15,341,920.60

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Solution

The fourth proportional to 18,703,917.40, 28,055,876.10 and 15,341,920.60 is: 23,012,880.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,703,917.40 : 28,055,876.10 = 15,341,920.60 : x
  2. Step 2: Convert to fraction form
    18,703,917.40/28,055,876.10 = 15,341,920.60/x
  3. Step 3: Cross multiply
    18,703,917.40x = 28,055,876.10 × 15,341,920.60
  4. Step 4: Simplify right side
    18,703,917.40x = 430,431,023,489,637.69
  5. Step 5: Solve for x
    x = 430,431,023,489,637.69/18,703,917.40
  6. Step 6: Final answer
    x = 23,012,880.90

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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.