Home / 28,111,798.80-42,136,205.40-15,987,070.80

Finding the Fourth Proportional to 28,111,798.80, 42,136,205.40 and 15,987,070.80

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Solution

The fourth proportional to 28,111,798.80, 42,136,205.40 and 15,987,070.80 is: 23,962,696.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,111,798.80 : 42,136,205.40 = 15,987,070.80 : x
  2. Step 2: Convert to fraction form
    28,111,798.80/42,136,205.40 = 15,987,070.80/x
  3. Step 3: Cross multiply
    28,111,798.80x = 42,136,205.40 × 15,987,070.80
  4. Step 4: Simplify right side
    28,111,798.80x = 673,634,498,973,142.38
  5. Step 5: Solve for x
    x = 673,634,498,973,142.38/28,111,798.80
  6. Step 6: Final answer
    x = 23,962,696.37

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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.