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Finding the Fourth Proportional to 13,228.31, 18,254.16 and 7,258.82

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Solution

The fourth proportional to 13,228.31, 18,254.16 and 7,258.82 is: 10,016.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,228.31 : 18,254.16 = 7,258.82 : x
  2. Step 2: Convert to fraction form
    13,228.31/18,254.16 = 7,258.82/x
  3. Step 3: Cross multiply
    13,228.31x = 18,254.16 × 7,258.82
  4. Step 4: Simplify right side
    13,228.31x = 132,503,570.42
  5. Step 5: Solve for x
    x = 132,503,570.42/13,228.31
  6. Step 6: Final answer
    x = 10,016.66

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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.