Home / 20,513.66-28,318.31-12,014.60

Finding the Fourth Proportional to 20,513.66, 28,318.31 and 12,014.60

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Solution

The fourth proportional to 20,513.66, 28,318.31 and 12,014.60 is: 16,585.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513.66 : 28,318.31 = 12,014.60 : x
  2. Step 2: Convert to fraction form
    20,513.66/28,318.31 = 12,014.60/x
  3. Step 3: Cross multiply
    20,513.66x = 28,318.31 × 12,014.60
  4. Step 4: Simplify right side
    20,513.66x = 340,232,965.66
  5. Step 5: Solve for x
    x = 340,232,965.66/20,513.66
  6. Step 6: Final answer
    x = 16,585.68

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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.