Home / 20,943.32-31,414.98-7,799

Finding the Fourth Proportional to 20,943.32, 31,414.98 and 7,799

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Solution

The fourth proportional to 20,943.32, 31,414.98 and 7,799 is: 11,698.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943.32 : 31,414.98 = 7,799 : x
  2. Step 2: Convert to fraction form
    20,943.32/31,414.98 = 7,799/x
  3. Step 3: Cross multiply
    20,943.32x = 31,414.98 × 7,799
  4. Step 4: Simplify right side
    20,943.32x = 245,005,429.02
  5. Step 5: Solve for x
    x = 245,005,429.02/20,943.32
  6. Step 6: Final answer
    x = 11,698.50

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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.