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Finding the Fourth Proportional to 18,825.92, 25,980.12 and 10,328.84

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Solution

The fourth proportional to 18,825.92, 25,980.12 and 10,328.84 is: 14,253.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,825.92 : 25,980.12 = 10,328.84 : x
  2. Step 2: Convert to fraction form
    18,825.92/25,980.12 = 10,328.84/x
  3. Step 3: Cross multiply
    18,825.92x = 25,980.12 × 10,328.84
  4. Step 4: Simplify right side
    18,825.92x = 268,344,502.66
  5. Step 5: Solve for x
    x = 268,344,502.66/18,825.92
  6. Step 6: Final answer
    x = 14,253.99

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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.