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Finding the Fourth Proportional to 13,298.72, 18,362 and 10,660.64

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Solution

The fourth proportional to 13,298.72, 18,362 and 10,660.64 is: 14,719.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,298.72 : 18,362 = 10,660.64 : x
  2. Step 2: Convert to fraction form
    13,298.72/18,362 = 10,660.64/x
  3. Step 3: Cross multiply
    13,298.72x = 18,362 × 10,660.64
  4. Step 4: Simplify right side
    13,298.72x = 195,750,671.68
  5. Step 5: Solve for x
    x = 195,750,671.68/13,298.72
  6. Step 6: Final answer
    x = 14,719.51

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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.