Home / 20,455.02-28,228.74-11,502.48

Finding the Fourth Proportional to 20,455.02, 28,228.74 and 11,502.48

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Solution

The fourth proportional to 20,455.02, 28,228.74 and 11,502.48 is: 15,873.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,455.02 : 28,228.74 = 11,502.48 : x
  2. Step 2: Convert to fraction form
    20,455.02/28,228.74 = 11,502.48/x
  3. Step 3: Cross multiply
    20,455.02x = 28,228.74 × 11,502.48
  4. Step 4: Simplify right side
    20,455.02x = 324,700,517.28
  5. Step 5: Solve for x
    x = 324,700,517.28/20,455.02
  6. Step 6: Final answer
    x = 15,873.88

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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.