Home / 20,326,641.28-30,611,654.88-18,512,656

Finding the Fourth Proportional to 20,326,641.28, 30,611,654.88 and 18,512,656

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Solution

The fourth proportional to 20,326,641.28, 30,611,654.88 and 18,512,656 is: 27,879,816.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,326,641.28 : 30,611,654.88 = 18,512,656 : x
  2. Step 2: Convert to fraction form
    20,326,641.28/30,611,654.88 = 18,512,656/x
  3. Step 3: Cross multiply
    20,326,641.28x = 30,611,654.88 × 18,512,656
  4. Step 4: Simplify right side
    20,326,641.28x = 566,703,036,384,161.25
  5. Step 5: Solve for x
    x = 566,703,036,384,161.25/20,326,641.28
  6. Step 6: Final answer
    x = 27,879,816.87

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.