Home / 28,943,886.70-39,942,642.24-15,891,991

Finding the Fourth Proportional to 28,943,886.70, 39,942,642.24 and 15,891,991

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Solution

The fourth proportional to 28,943,886.70, 39,942,642.24 and 15,891,991 is: 21,930,990.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,943,886.70 : 39,942,642.24 = 15,891,991 : x
  2. Step 2: Convert to fraction form
    28,943,886.70/39,942,642.24 = 15,891,991/x
  3. Step 3: Cross multiply
    28,943,886.70x = 39,942,642.24 × 15,891,991
  4. Step 4: Simplify right side
    28,943,886.70x = 634,768,110,994,299.88
  5. Step 5: Solve for x
    x = 634,768,110,994,299.88/28,943,886.70
  6. Step 6: Final answer
    x = 21,930,990.73

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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.