Home / 13,309,219.89-18,366,778.79-7,197,648.39

Finding the Fourth Proportional to 13,309,219.89, 18,366,778.79 and 7,197,648.39

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Solution

The fourth proportional to 13,309,219.89, 18,366,778.79 and 7,197,648.39 is: 9,932,784.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309,219.89 : 18,366,778.79 = 7,197,648.39 : x
  2. Step 2: Convert to fraction form
    13,309,219.89/18,366,778.79 = 7,197,648.39/x
  3. Step 3: Cross multiply
    13,309,219.89x = 18,366,778.79 × 7,197,648.39
  4. Step 4: Simplify right side
    13,309,219.89x = 132,197,615,787,329.64
  5. Step 5: Solve for x
    x = 132,197,615,787,329.64/13,309,219.89
  6. Step 6: Final answer
    x = 9,932,784.71

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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.