Home / 28,991,992.72-40,008,975.60-15,939,473.68

Finding the Fourth Proportional to 28,991,992.72, 40,008,975.60 and 15,939,473.68

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Solution

The fourth proportional to 28,991,992.72, 40,008,975.60 and 15,939,473.68 is: 21,996,487.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,991,992.72 : 40,008,975.60 = 15,939,473.68 : x
  2. Step 2: Convert to fraction form
    28,991,992.72/40,008,975.60 = 15,939,473.68/x
  3. Step 3: Cross multiply
    28,991,992.72x = 40,008,975.60 × 15,939,473.68
  4. Step 4: Simplify right side
    28,991,992.72x = 637,722,013,539,962.25
  5. Step 5: Solve for x
    x = 637,722,013,539,962.25/28,991,992.72
  6. Step 6: Final answer
    x = 21,996,487.78

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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.