Home / 21,008,035.68-28,991,061.16-11,350,243.68

Finding the Fourth Proportional to 21,008,035.68, 28,991,061.16 and 11,350,243.68

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Solution

The fourth proportional to 21,008,035.68, 28,991,061.16 and 11,350,243.68 is: 15,663,321.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,008,035.68 : 28,991,061.16 = 11,350,243.68 : x
  2. Step 2: Convert to fraction form
    21,008,035.68/28,991,061.16 = 11,350,243.68/x
  3. Step 3: Cross multiply
    21,008,035.68x = 28,991,061.16 × 11,350,243.68
  4. Step 4: Simplify right side
    21,008,035.68x = 329,055,608,707,783.44
  5. Step 5: Solve for x
    x = 329,055,608,707,783.44/21,008,035.68
  6. Step 6: Final answer
    x = 15,663,321.11

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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.