Home / 28,943,319.61-39,942,904.31-15,891,128.65

Finding the Fourth Proportional to 28,943,319.61, 39,942,904.31 and 15,891,128.65

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Solution

The fourth proportional to 28,943,319.61, 39,942,904.31 and 15,891,128.65 is: 21,930,374.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,943,319.61 : 39,942,904.31 = 15,891,128.65 : x
  2. Step 2: Convert to fraction form
    28,943,319.61/39,942,904.31 = 15,891,128.65/x
  3. Step 3: Cross multiply
    28,943,319.61x = 39,942,904.31 × 15,891,128.65
  4. Step 4: Simplify right side
    28,943,319.61x = 634,737,831,044,849.50
  5. Step 5: Solve for x
    x = 634,737,831,044,849.50/28,943,319.61
  6. Step 6: Final answer
    x = 21,930,374.25

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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.