Home / 20,478,389.22-30,726,545.67-9,703,380.42

Finding the Fourth Proportional to 20,478,389.22, 30,726,545.67 and 9,703,380.42

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Solution

The fourth proportional to 20,478,389.22, 30,726,545.67 and 9,703,380.42 is: 14,559,317.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,478,389.22 : 30,726,545.67 = 9,703,380.42 : x
  2. Step 2: Convert to fraction form
    20,478,389.22/30,726,545.67 = 9,703,380.42/x
  3. Step 3: Cross multiply
    20,478,389.22x = 30,726,545.67 × 9,703,380.42
  4. Step 4: Simplify right side
    20,478,389.22x = 298,151,361,628,513.81
  5. Step 5: Solve for x
    x = 298,151,361,628,513.81/20,478,389.22
  6. Step 6: Final answer
    x = 14,559,317.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.