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Finding the Fourth Proportional to 20,883, 28,818.23 and 11,322.62

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Solution

The fourth proportional to 20,883, 28,818.23 and 11,322.62 is: 15,625.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,883 : 28,818.23 = 11,322.62 : x
  2. Step 2: Convert to fraction form
    20,883/28,818.23 = 11,322.62/x
  3. Step 3: Cross multiply
    20,883x = 28,818.23 × 11,322.62
  4. Step 4: Simplify right side
    20,883x = 326,297,666.66
  5. Step 5: Solve for x
    x = 326,297,666.66/20,883
  6. Step 6: Final answer
    x = 15,625.04

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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.