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Finding the Fourth Proportional to 20,006.26, 30,009.30 and 18,788.30

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Solution

The fourth proportional to 20,006.26, 30,009.30 and 18,788.30 is: 28,182.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,006.26 : 30,009.30 = 18,788.30 : x
  2. Step 2: Convert to fraction form
    20,006.26/30,009.30 = 18,788.30/x
  3. Step 3: Cross multiply
    20,006.26x = 30,009.30 × 18,788.30
  4. Step 4: Simplify right side
    20,006.26x = 563,823,731.19
  5. Step 5: Solve for x
    x = 563,823,731.19/20,006.26
  6. Step 6: Final answer
    x = 28,182.37

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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.