Home / 21,226.32-31,839.39-5,643.95

Finding the Fourth Proportional to 21,226.32, 31,839.39 and 5,643.95

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Solution

The fourth proportional to 21,226.32, 31,839.39 and 5,643.95 is: 8,465.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,226.32 : 31,839.39 = 5,643.95 : x
  2. Step 2: Convert to fraction form
    21,226.32/31,839.39 = 5,643.95/x
  3. Step 3: Cross multiply
    21,226.32x = 31,839.39 × 5,643.95
  4. Step 4: Simplify right side
    21,226.32x = 179,699,765.99
  5. Step 5: Solve for x
    x = 179,699,765.99/21,226.32
  6. Step 6: Final answer
    x = 8,465.89

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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.