Home / 20,288,636.94-30,361,116.64-12,615,894.94

Finding the Fourth Proportional to 20,288,636.94, 30,361,116.64 and 12,615,894.94

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Solution

The fourth proportional to 20,288,636.94, 30,361,116.64 and 12,615,894.94 is: 18,879,171.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,288,636.94 : 30,361,116.64 = 12,615,894.94 : x
  2. Step 2: Convert to fraction form
    20,288,636.94/30,361,116.64 = 12,615,894.94/x
  3. Step 3: Cross multiply
    20,288,636.94x = 30,361,116.64 × 12,615,894.94
  4. Step 4: Simplify right side
    20,288,636.94x = 383,032,657,791,325.81
  5. Step 5: Solve for x
    x = 383,032,657,791,325.81/20,288,636.94
  6. Step 6: Final answer
    x = 18,879,171.57

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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.