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Finding the Fourth Proportional to 18,481.70, 25,509.33 and 10,528.65

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Solution

The fourth proportional to 18,481.70, 25,509.33 and 10,528.65 is: 14,532.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,481.70 : 25,509.33 = 10,528.65 : x
  2. Step 2: Convert to fraction form
    18,481.70/25,509.33 = 10,528.65/x
  3. Step 3: Cross multiply
    18,481.70x = 25,509.33 × 10,528.65
  4. Step 4: Simplify right side
    18,481.70x = 268,578,807.30
  5. Step 5: Solve for x
    x = 268,578,807.30/18,481.70
  6. Step 6: Final answer
    x = 14,532.15

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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.