Home / 15,117,578.40-20,861,359.20-8,590,301.94

Finding the Fourth Proportional to 15,117,578.40, 20,861,359.20 and 8,590,301.94

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Solution

The fourth proportional to 15,117,578.40, 20,861,359.20 and 8,590,301.94 is: 11,854,105.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,117,578.40 : 20,861,359.20 = 8,590,301.94 : x
  2. Step 2: Convert to fraction form
    15,117,578.40/20,861,359.20 = 8,590,301.94/x
  3. Step 3: Cross multiply
    15,117,578.40x = 20,861,359.20 × 8,590,301.94
  4. Step 4: Simplify right side
    15,117,578.40x = 179,205,374,406,796.84
  5. Step 5: Solve for x
    x = 179,205,374,406,796.84/15,117,578.40
  6. Step 6: Final answer
    x = 11,854,105.84

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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.