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Finding the Fourth Proportional to 18,212.58, 25,134.03 and 10,257.30

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Solution

The fourth proportional to 18,212.58, 25,134.03 and 10,257.30 is: 14,155.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,212.58 : 25,134.03 = 10,257.30 : x
  2. Step 2: Convert to fraction form
    18,212.58/25,134.03 = 10,257.30/x
  3. Step 3: Cross multiply
    18,212.58x = 25,134.03 × 10,257.30
  4. Step 4: Simplify right side
    18,212.58x = 257,807,285.92
  5. Step 5: Solve for x
    x = 257,807,285.92/18,212.58
  6. Step 6: Final answer
    x = 14,155.45

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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.