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Finding the Fourth Proportional to 20,309.01, 28,026.52 and 11,356.51

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Solution

The fourth proportional to 20,309.01, 28,026.52 and 11,356.51 is: 15,672.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,309.01 : 28,026.52 = 11,356.51 : x
  2. Step 2: Convert to fraction form
    20,309.01/28,026.52 = 11,356.51/x
  3. Step 3: Cross multiply
    20,309.01x = 28,026.52 × 11,356.51
  4. Step 4: Simplify right side
    20,309.01x = 318,283,553.10
  5. Step 5: Solve for x
    x = 318,283,553.10/20,309.01
  6. Step 6: Final answer
    x = 15,672.03

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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.