Home / 28,111,805.80-42,136,215.90-15,987,077.80

Finding the Fourth Proportional to 28,111,805.80, 42,136,215.90 and 15,987,077.80

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Solution

The fourth proportional to 28,111,805.80, 42,136,215.90 and 15,987,077.80 is: 23,962,706.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,111,805.80 : 42,136,215.90 = 15,987,077.80 : x
  2. Step 2: Convert to fraction form
    28,111,805.80/42,136,215.90 = 15,987,077.80/x
  3. Step 3: Cross multiply
    28,111,805.80x = 42,136,215.90 × 15,987,077.80
  4. Step 4: Simplify right side
    28,111,805.80x = 673,634,961,790,897
  5. Step 5: Solve for x
    x = 673,634,961,790,897/28,111,805.80
  6. Step 6: Final answer
    x = 23,962,706.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.