Home / 28,865,799.88-39,834,851.86-15,812,774.20

Finding the Fourth Proportional to 28,865,799.88, 39,834,851.86 and 15,812,774.20

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Solution

The fourth proportional to 28,865,799.88, 39,834,851.86 and 15,812,774.20 is: 21,821,654.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,865,799.88 : 39,834,851.86 = 15,812,774.20 : x
  2. Step 2: Convert to fraction form
    28,865,799.88/39,834,851.86 = 15,812,774.20/x
  3. Step 3: Cross multiply
    28,865,799.88x = 39,834,851.86 × 15,812,774.20
  4. Step 4: Simplify right side
    28,865,799.88x = 629,899,517,752,630
  5. Step 5: Solve for x
    x = 629,899,517,752,630/28,865,799.88
  6. Step 6: Final answer
    x = 21,821,654.70

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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.