Home / 20,836,428.68-31,255,824-6,461,540.12

Finding the Fourth Proportional to 20,836,428.68, 31,255,824 and 6,461,540.12

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Solution

The fourth proportional to 20,836,428.68, 31,255,824 and 6,461,540.12 is: 9,692,676.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,836,428.68 : 31,255,824 = 6,461,540.12 : x
  2. Step 2: Convert to fraction form
    20,836,428.68/31,255,824 = 6,461,540.12/x
  3. Step 3: Cross multiply
    20,836,428.68x = 31,255,824 × 6,461,540.12
  4. Step 4: Simplify right side
    20,836,428.68x = 201,960,760,603,379.78
  5. Step 5: Solve for x
    x = 201,960,760,603,379.78/20,836,428.68
  6. Step 6: Final answer
    x = 9,692,676.41

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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.