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Finding the Fourth Proportional to 18,202.30, 25,110 and 10,643.68

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Solution

The fourth proportional to 18,202.30, 25,110 and 10,643.68 is: 14,682.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,202.30 : 25,110 = 10,643.68 : x
  2. Step 2: Convert to fraction form
    18,202.30/25,110 = 10,643.68/x
  3. Step 3: Cross multiply
    18,202.30x = 25,110 × 10,643.68
  4. Step 4: Simplify right side
    18,202.30x = 267,262,804.80
  5. Step 5: Solve for x
    x = 267,262,804.80/18,202.30
  6. Step 6: Final answer
    x = 14,682.91

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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.