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Finding the Fourth Proportional to 20,053.68, 30,075.68 and 8,360.52

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Solution

The fourth proportional to 20,053.68, 30,075.68 and 8,360.52 is: 12,538.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,053.68 : 30,075.68 = 8,360.52 : x
  2. Step 2: Convert to fraction form
    20,053.68/30,075.68 = 8,360.52/x
  3. Step 3: Cross multiply
    20,053.68x = 30,075.68 × 8,360.52
  4. Step 4: Simplify right side
    20,053.68x = 251,448,324.15
  5. Step 5: Solve for x
    x = 251,448,324.15/20,053.68
  6. Step 6: Final answer
    x = 12,538.76

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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.