Home / 13,228.52-18,258.48-8,986.55

Finding the Fourth Proportional to 13,228.52, 18,258.48 and 8,986.55

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Solution

The fourth proportional to 13,228.52, 18,258.48 and 8,986.55 is: 12,403.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,228.52 : 18,258.48 = 8,986.55 : x
  2. Step 2: Convert to fraction form
    13,228.52/18,258.48 = 8,986.55/x
  3. Step 3: Cross multiply
    13,228.52x = 18,258.48 × 8,986.55
  4. Step 4: Simplify right side
    13,228.52x = 164,080,652.15
  5. Step 5: Solve for x
    x = 164,080,652.15/13,228.52
  6. Step 6: Final answer
    x = 12,403.56

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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.