Home / 20,562.22-28,375.81-11,130.74

Finding the Fourth Proportional to 20,562.22, 28,375.81 and 11,130.74

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Solution

The fourth proportional to 20,562.22, 28,375.81 and 11,130.74 is: 15,360.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,562.22 : 28,375.81 = 11,130.74 : x
  2. Step 2: Convert to fraction form
    20,562.22/28,375.81 = 11,130.74/x
  3. Step 3: Cross multiply
    20,562.22x = 28,375.81 × 11,130.74
  4. Step 4: Simplify right side
    20,562.22x = 315,843,763.40
  5. Step 5: Solve for x
    x = 315,843,763.40/20,562.22
  6. Step 6: Final answer
    x = 15,360.39

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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.