Home / 13,138,817.56-18,131,508.38-7,258,453.40

Finding the Fourth Proportional to 13,138,817.56, 18,131,508.38 and 7,258,453.40

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Solution

The fourth proportional to 13,138,817.56, 18,131,508.38 and 7,258,453.40 is: 10,016,632.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,138,817.56 : 18,131,508.38 = 7,258,453.40 : x
  2. Step 2: Convert to fraction form
    13,138,817.56/18,131,508.38 = 7,258,453.40/x
  3. Step 3: Cross multiply
    13,138,817.56x = 18,131,508.38 × 7,258,453.40
  4. Step 4: Simplify right side
    13,138,817.56x = 131,606,708,711,414.39
  5. Step 5: Solve for x
    x = 131,606,708,711,414.39/13,138,817.56
  6. Step 6: Final answer
    x = 10,016,632.63

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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.