Home / 21,297.39-31,943.31-6,507.78

Finding the Fourth Proportional to 21,297.39, 31,943.31 and 6,507.78

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Solution

The fourth proportional to 21,297.39, 31,943.31 and 6,507.78 is: 9,760.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,297.39 : 31,943.31 = 6,507.78 : x
  2. Step 2: Convert to fraction form
    21,297.39/31,943.31 = 6,507.78/x
  3. Step 3: Cross multiply
    21,297.39x = 31,943.31 × 6,507.78
  4. Step 4: Simplify right side
    21,297.39x = 207,880,033.95
  5. Step 5: Solve for x
    x = 207,880,033.95/21,297.39
  6. Step 6: Final answer
    x = 9,760.82

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1.5x scale

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.