Home / 20,986,376.40-28,960,434.78-11,693,466.24

Finding the Fourth Proportional to 20,986,376.40, 28,960,434.78 and 11,693,466.24

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Solution

The fourth proportional to 20,986,376.40, 28,960,434.78 and 11,693,466.24 is: 16,136,557.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,986,376.40 : 28,960,434.78 = 11,693,466.24 : x
  2. Step 2: Convert to fraction form
    20,986,376.40/28,960,434.78 = 11,693,466.24/x
  3. Step 3: Cross multiply
    20,986,376.40x = 28,960,434.78 × 11,693,466.24
  4. Step 4: Simplify right side
    20,986,376.40x = 338,647,866,395,651.88
  5. Step 5: Solve for x
    x = 338,647,866,395,651.88/20,986,376.40
  6. Step 6: Final answer
    x = 16,136,557.35

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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.