Home / 15,839.43-21,858.71-8,766.51

Finding the Fourth Proportional to 15,839.43, 21,858.71 and 8,766.51

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Solution

The fourth proportional to 15,839.43, 21,858.71 and 8,766.51 is: 12,097.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,839.43 : 21,858.71 = 8,766.51 : x
  2. Step 2: Convert to fraction form
    15,839.43/21,858.71 = 8,766.51/x
  3. Step 3: Cross multiply
    15,839.43x = 21,858.71 × 8,766.51
  4. Step 4: Simplify right side
    15,839.43x = 191,624,555.97
  5. Step 5: Solve for x
    x = 191,624,555.97/15,839.43
  6. Step 6: Final answer
    x = 12,097.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.