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Finding the Fourth Proportional to 18,881.33, 28,309.50 and 10,562.22

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Solution

The fourth proportional to 18,881.33, 28,309.50 and 10,562.22 is: 15,836.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,881.33 : 28,309.50 = 10,562.22 : x
  2. Step 2: Convert to fraction form
    18,881.33/28,309.50 = 10,562.22/x
  3. Step 3: Cross multiply
    18,881.33x = 28,309.50 × 10,562.22
  4. Step 4: Simplify right side
    18,881.33x = 299,011,167.09
  5. Step 5: Solve for x
    x = 299,011,167.09/18,881.33
  6. Step 6: Final answer
    x = 15,836.34

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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.