Home / 28,943,886.20-39,942,641.55-15,891,990.50

Finding the Fourth Proportional to 28,943,886.20, 39,942,641.55 and 15,891,990.50

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Solution

The fourth proportional to 28,943,886.20, 39,942,641.55 and 15,891,990.50 is: 21,930,990.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,943,886.20 : 39,942,641.55 = 15,891,990.50 : x
  2. Step 2: Convert to fraction form
    28,943,886.20/39,942,641.55 = 15,891,990.50/x
  3. Step 3: Cross multiply
    28,943,886.20x = 39,942,641.55 × 15,891,990.50
  4. Step 4: Simplify right side
    28,943,886.20x = 634,768,080,057,505.25
  5. Step 5: Solve for x
    x = 634,768,080,057,505.25/28,943,886.20
  6. Step 6: Final answer
    x = 21,930,990.04

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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.