Home / 12,454,568.70-18,681,853.05-7,415,720.70

Finding the Fourth Proportional to 12,454,568.70, 18,681,853.05 and 7,415,720.70

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Solution

The fourth proportional to 12,454,568.70, 18,681,853.05 and 7,415,720.70 is: 11,123,581.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,454,568.70 : 18,681,853.05 = 7,415,720.70 : x
  2. Step 2: Convert to fraction form
    12,454,568.70/18,681,853.05 = 7,415,720.70/x
  3. Step 3: Cross multiply
    12,454,568.70x = 18,681,853.05 × 7,415,720.70
  4. Step 4: Simplify right side
    12,454,568.70x = 138,539,404,377,243.14
  5. Step 5: Solve for x
    x = 138,539,404,377,243.14/12,454,568.70
  6. Step 6: Final answer
    x = 11,123,581.05

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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.