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Finding the Fourth Proportional to 21,366,496.80, 31,990,762.80 and 16,647,904.80

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Solution

The fourth proportional to 21,366,496.80, 31,990,762.80 and 16,647,904.80 is: 24,925,900.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,366,496.80 : 31,990,762.80 = 16,647,904.80 : x
  2. Step 2: Convert to fraction form
    21,366,496.80/31,990,762.80 = 16,647,904.80/x
  3. Step 3: Cross multiply
    21,366,496.80x = 31,990,762.80 × 16,647,904.80
  4. Step 4: Simplify right side
    21,366,496.80x = 532,579,173,573,781.50
  5. Step 5: Solve for x
    x = 532,579,173,573,781.50/21,366,496.80
  6. Step 6: Final answer
    x = 24,925,900.51

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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.