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Finding the Fourth Proportional to 25,664.48, 38,509.01 and 12,509.67

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Solution

The fourth proportional to 25,664.48, 38,509.01 and 12,509.67 is: 18,770.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,664.48 : 38,509.01 = 12,509.67 : x
  2. Step 2: Convert to fraction form
    25,664.48/38,509.01 = 12,509.67/x
  3. Step 3: Cross multiply
    25,664.48x = 38,509.01 × 12,509.67
  4. Step 4: Simplify right side
    25,664.48x = 481,734,944.58
  5. Step 5: Solve for x
    x = 481,734,944.58/25,664.48
  6. Step 6: Final answer
    x = 18,770.50

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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.