Home / 20,787,221.69-31,180,307.66-5,640,759.53

Finding the Fourth Proportional to 20,787,221.69, 31,180,307.66 and 5,640,759.53

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Solution

The fourth proportional to 20,787,221.69, 31,180,307.66 and 5,640,759.53 is: 8,460,996.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,787,221.69 : 31,180,307.66 = 5,640,759.53 : x
  2. Step 2: Convert to fraction form
    20,787,221.69/31,180,307.66 = 5,640,759.53/x
  3. Step 3: Cross multiply
    20,787,221.69x = 31,180,307.66 × 5,640,759.53
  4. Step 4: Simplify right side
    20,787,221.69x = 175,880,617,553,273.22
  5. Step 5: Solve for x
    x = 175,880,617,553,273.22/20,787,221.69
  6. Step 6: Final answer
    x = 8,460,996.87

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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.