Home / 13,258.50-18,300.68-8,724.68

Finding the Fourth Proportional to 13,258.50, 18,300.68 and 8,724.68

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Solution

The fourth proportional to 13,258.50, 18,300.68 and 8,724.68 is: 12,042.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,258.50 : 18,300.68 = 8,724.68 : x
  2. Step 2: Convert to fraction form
    13,258.50/18,300.68 = 8,724.68/x
  3. Step 3: Cross multiply
    13,258.50x = 18,300.68 × 8,724.68
  4. Step 4: Simplify right side
    13,258.50x = 159,667,490.73
  5. Step 5: Solve for x
    x = 159,667,490.73/13,258.50
  6. Step 6: Final answer
    x = 12,042.65

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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.