Home / 20,969,534.21-31,456,117.71-6,399,731.54

Finding the Fourth Proportional to 20,969,534.21, 31,456,117.71 and 6,399,731.54

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Solution

The fourth proportional to 20,969,534.21, 31,456,117.71 and 6,399,731.54 is: 9,600,151.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,969,534.21 : 31,456,117.71 = 6,399,731.54 : x
  2. Step 2: Convert to fraction form
    20,969,534.21/31,456,117.71 = 6,399,731.54/x
  3. Step 3: Cross multiply
    20,969,534.21x = 31,456,117.71 × 6,399,731.54
  4. Step 4: Simplify right side
    20,969,534.21x = 201,310,708,477,359
  5. Step 5: Solve for x
    x = 201,310,708,477,359/20,969,534.21
  6. Step 6: Final answer
    x = 9,600,151.65

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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.