Home / 20,777,328.80-31,165,993.20-13,124,578.40

Finding the Fourth Proportional to 20,777,328.80, 31,165,993.20 and 13,124,578.40

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Solution

The fourth proportional to 20,777,328.80, 31,165,993.20 and 13,124,578.40 is: 19,686,867.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,777,328.80 : 31,165,993.20 = 13,124,578.40 : x
  2. Step 2: Convert to fraction form
    20,777,328.80/31,165,993.20 = 13,124,578.40/x
  3. Step 3: Cross multiply
    20,777,328.80x = 31,165,993.20 × 13,124,578.40
  4. Step 4: Simplify right side
    20,777,328.80x = 409,040,521,167,266.88
  5. Step 5: Solve for x
    x = 409,040,521,167,266.88/20,777,328.80
  6. Step 6: Final answer
    x = 19,686,867.60

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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.