Home / 20,545,408.71-28,351,653.68-11,253,019.32

Finding the Fourth Proportional to 20,545,408.71, 28,351,653.68 and 11,253,019.32

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Solution

The fourth proportional to 20,545,408.71, 28,351,653.68 and 11,253,019.32 is: 15,528,613.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,545,408.71 : 28,351,653.68 = 11,253,019.32 : x
  2. Step 2: Convert to fraction form
    20,545,408.71/28,351,653.68 = 11,253,019.32/x
  3. Step 3: Cross multiply
    20,545,408.71x = 28,351,653.68 × 11,253,019.32
  4. Step 4: Simplify right side
    20,545,408.71x = 319,041,706,643,121.69
  5. Step 5: Solve for x
    x = 319,041,706,643,121.69/20,545,408.71
  6. Step 6: Final answer
    x = 15,528,613.29

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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.