Home / 20,811,512.63-31,216,520.54-5,458,679.69

Finding the Fourth Proportional to 20,811,512.63, 31,216,520.54 and 5,458,679.69

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Solution

The fourth proportional to 20,811,512.63, 31,216,520.54 and 5,458,679.69 is: 8,187,823.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,811,512.63 : 31,216,520.54 = 5,458,679.69 : x
  2. Step 2: Convert to fraction form
    20,811,512.63/31,216,520.54 = 5,458,679.69/x
  3. Step 3: Cross multiply
    20,811,512.63x = 31,216,520.54 × 5,458,679.69
  4. Step 4: Simplify right side
    20,811,512.63x = 170,400,986,521,729.91
  5. Step 5: Solve for x
    x = 170,400,986,521,729.91/20,811,512.63
  6. Step 6: Final answer
    x = 8,187,823.23

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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.