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Finding the Fourth Proportional to 18,481.95, 25,509.68 and 10,528.90

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Solution

The fourth proportional to 18,481.95, 25,509.68 and 10,528.90 is: 14,532.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,481.95 : 25,509.68 = 10,528.90 : x
  2. Step 2: Convert to fraction form
    18,481.95/25,509.68 = 10,528.90/x
  3. Step 3: Cross multiply
    18,481.95x = 25,509.68 × 10,528.90
  4. Step 4: Simplify right side
    18,481.95x = 268,588,817.11
  5. Step 5: Solve for x
    x = 268,588,817.11/18,481.95
  6. Step 6: Final answer
    x = 14,532.49

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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.