Home / 15,865.08-21,892.74-8,791.26

Finding the Fourth Proportional to 15,865.08, 21,892.74 and 8,791.26

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Solution

The fourth proportional to 15,865.08, 21,892.74 and 8,791.26 is: 12,131.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,865.08 : 21,892.74 = 8,791.26 : x
  2. Step 2: Convert to fraction form
    15,865.08/21,892.74 = 8,791.26/x
  3. Step 3: Cross multiply
    15,865.08x = 21,892.74 × 8,791.26
  4. Step 4: Simplify right side
    15,865.08x = 192,464,769.45
  5. Step 5: Solve for x
    x = 192,464,769.45/15,865.08
  6. Step 6: Final answer
    x = 12,131.35

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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.