Home / 20,254.20-30,339.27-17,123.28

Finding the Fourth Proportional to 20,254.20, 30,339.27 and 17,123.28

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Solution

The fourth proportional to 20,254.20, 30,339.27 and 17,123.28 is: 25,649.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,254.20 : 30,339.27 = 17,123.28 : x
  2. Step 2: Convert to fraction form
    20,254.20/30,339.27 = 17,123.28/x
  3. Step 3: Cross multiply
    20,254.20x = 30,339.27 × 17,123.28
  4. Step 4: Simplify right side
    20,254.20x = 519,507,815.21
  5. Step 5: Solve for x
    x = 519,507,815.21/20,254.20
  6. Step 6: Final answer
    x = 25,649.39

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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.