Home / 20,343.84-28,073.25-11,389.83

Finding the Fourth Proportional to 20,343.84, 28,073.25 and 11,389.83

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Solution

The fourth proportional to 20,343.84, 28,073.25 and 11,389.83 is: 15,717.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,343.84 : 28,073.25 = 11,389.83 : x
  2. Step 2: Convert to fraction form
    20,343.84/28,073.25 = 11,389.83/x
  3. Step 3: Cross multiply
    20,343.84x = 28,073.25 × 11,389.83
  4. Step 4: Simplify right side
    20,343.84x = 319,749,545.05
  5. Step 5: Solve for x
    x = 319,749,545.05/20,343.84
  6. Step 6: Final answer
    x = 15,717.27

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1.5x scale

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.