Home / 20,562.02-28,375.64-11,130.60

Finding the Fourth Proportional to 20,562.02, 28,375.64 and 11,130.60

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Solution

The fourth proportional to 20,562.02, 28,375.64 and 11,130.60 is: 15,360.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,562.02 : 28,375.64 = 11,130.60 : x
  2. Step 2: Convert to fraction form
    20,562.02/28,375.64 = 11,130.60/x
  3. Step 3: Cross multiply
    20,562.02x = 28,375.64 × 11,130.60
  4. Step 4: Simplify right side
    20,562.02x = 315,837,898.58
  5. Step 5: Solve for x
    x = 315,837,898.58/20,562.02
  6. Step 6: Final answer
    x = 15,360.26

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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.