Home / 13,511,781.87-18,647,592.72-7,711,431.40

Finding the Fourth Proportional to 13,511,781.87, 18,647,592.72 and 7,711,431.40

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Solution

The fourth proportional to 13,511,781.87, 18,647,592.72 and 7,711,431.40 is: 10,642,536.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,511,781.87 : 18,647,592.72 = 7,711,431.40 : x
  2. Step 2: Convert to fraction form
    13,511,781.87/18,647,592.72 = 7,711,431.40/x
  3. Step 3: Cross multiply
    13,511,781.87x = 18,647,592.72 × 7,711,431.40
  4. Step 4: Simplify right side
    13,511,781.87x = 143,799,632,035,419.41
  5. Step 5: Solve for x
    x = 143,799,632,035,419.41/13,511,781.87
  6. Step 6: Final answer
    x = 10,642,536.52

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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.