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Finding the Fourth Proportional to 18,717.66, 28,053.11 and 9,360.34

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Solution

The fourth proportional to 18,717.66, 28,053.11 and 9,360.34 is: 14,028.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,717.66 : 28,053.11 = 9,360.34 : x
  2. Step 2: Convert to fraction form
    18,717.66/28,053.11 = 9,360.34/x
  3. Step 3: Cross multiply
    18,717.66x = 28,053.11 × 9,360.34
  4. Step 4: Simplify right side
    18,717.66x = 262,586,600.93
  5. Step 5: Solve for x
    x = 262,586,600.93/18,717.66
  6. Step 6: Final answer
    x = 14,028.82

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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.