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Finding the Fourth Proportional to 25,129.66, 37,698.60 and 8,490.68

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Solution

The fourth proportional to 25,129.66, 37,698.60 and 8,490.68 is: 12,737.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,129.66 : 37,698.60 = 8,490.68 : x
  2. Step 2: Convert to fraction form
    25,129.66/37,698.60 = 8,490.68/x
  3. Step 3: Cross multiply
    25,129.66x = 37,698.60 × 8,490.68
  4. Step 4: Simplify right side
    25,129.66x = 320,086,749.05
  5. Step 5: Solve for x
    x = 320,086,749.05/25,129.66
  6. Step 6: Final answer
    x = 12,737.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.