Home / 28,978,893.12-39,990,060-15,926,147.04

Finding the Fourth Proportional to 28,978,893.12, 39,990,060 and 15,926,147.04

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Solution

The fourth proportional to 28,978,893.12, 39,990,060 and 15,926,147.04 is: 21,977,636.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,978,893.12 : 39,990,060 = 15,926,147.04 : x
  2. Step 2: Convert to fraction form
    28,978,893.12/39,990,060 = 15,926,147.04/x
  3. Step 3: Cross multiply
    28,978,893.12x = 39,990,060 × 15,926,147.04
  4. Step 4: Simplify right side
    28,978,893.12x = 636,887,575,698,422.38
  5. Step 5: Solve for x
    x = 636,887,575,698,422.38/28,978,893.12
  6. Step 6: Final answer
    x = 21,977,636.38

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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.