Home / 20,288,637.82-30,361,117.96-12,615,895.81

Finding the Fourth Proportional to 20,288,637.82, 30,361,117.96 and 12,615,895.81

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Solution

The fourth proportional to 20,288,637.82, 30,361,117.96 and 12,615,895.81 is: 18,879,172.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,288,637.82 : 30,361,117.96 = 12,615,895.81 : x
  2. Step 2: Convert to fraction form
    20,288,637.82/30,361,117.96 = 12,615,895.81/x
  3. Step 3: Cross multiply
    20,288,637.82x = 30,361,117.96 × 12,615,895.81
  4. Step 4: Simplify right side
    20,288,637.82x = 383,032,700,858,479.75
  5. Step 5: Solve for x
    x = 383,032,700,858,479.75/20,288,637.82
  6. Step 6: Final answer
    x = 18,879,172.88

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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.