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Finding the Fourth Proportional to 21,244.56, 31,881.36 and 7,393.56

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Solution

The fourth proportional to 21,244.56, 31,881.36 and 7,393.56 is: 11,095.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,244.56 : 31,881.36 = 7,393.56 : x
  2. Step 2: Convert to fraction form
    21,244.56/31,881.36 = 7,393.56/x
  3. Step 3: Cross multiply
    21,244.56x = 31,881.36 × 7,393.56
  4. Step 4: Simplify right side
    21,244.56x = 235,716,748.04
  5. Step 5: Solve for x
    x = 235,716,748.04/21,244.56
  6. Step 6: Final answer
    x = 11,095.39

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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.