Home / 21,255.87-31,941.35-11,402.22

Finding the Fourth Proportional to 21,255.87, 31,941.35 and 11,402.22

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Solution

The fourth proportional to 21,255.87, 31,941.35 and 11,402.22 is: 17,134.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,255.87 : 31,941.35 = 11,402.22 : x
  2. Step 2: Convert to fraction form
    21,255.87/31,941.35 = 11,402.22/x
  3. Step 3: Cross multiply
    21,255.87x = 31,941.35 × 11,402.22
  4. Step 4: Simplify right side
    21,255.87x = 364,202,242.79
  5. Step 5: Solve for x
    x = 364,202,242.79/21,255.87
  6. Step 6: Final answer
    x = 17,134.20

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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.