Home / 15,935.61-21,991.71-8,766.09

Finding the Fourth Proportional to 15,935.61, 21,991.71 and 8,766.09

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Solution

The fourth proportional to 15,935.61, 21,991.71 and 8,766.09 is: 12,097.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,935.61 : 21,991.71 = 8,766.09 : x
  2. Step 2: Convert to fraction form
    15,935.61/21,991.71 = 8,766.09/x
  3. Step 3: Cross multiply
    15,935.61x = 21,991.71 × 8,766.09
  4. Step 4: Simplify right side
    15,935.61x = 192,781,309.11
  5. Step 5: Solve for x
    x = 192,781,309.11/15,935.61
  6. Step 6: Final answer
    x = 12,097.52

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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.