Home / 18,204.21-25,129.56-12,239.34

Finding the Fourth Proportional to 18,204.21, 25,129.56 and 12,239.34

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Solution

The fourth proportional to 18,204.21, 25,129.56 and 12,239.34 is: 16,895.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,204.21 : 25,129.56 = 12,239.34 : x
  2. Step 2: Convert to fraction form
    18,204.21/25,129.56 = 12,239.34/x
  3. Step 3: Cross multiply
    18,204.21x = 25,129.56 × 12,239.34
  4. Step 4: Simplify right side
    18,204.21x = 307,569,228.89
  5. Step 5: Solve for x
    x = 307,569,228.89/18,204.21
  6. Step 6: Final answer
    x = 16,895.50

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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.