Home / 25,475.06-38,211.40-12,138.36

Finding the Fourth Proportional to 25,475.06, 38,211.40 and 12,138.36

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Solution

The fourth proportional to 25,475.06, 38,211.40 and 12,138.36 is: 18,206.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,475.06 : 38,211.40 = 12,138.36 : x
  2. Step 2: Convert to fraction form
    25,475.06/38,211.40 = 12,138.36/x
  3. Step 3: Cross multiply
    25,475.06x = 38,211.40 × 12,138.36
  4. Step 4: Simplify right side
    25,475.06x = 463,823,532.91
  5. Step 5: Solve for x
    x = 463,823,532.91/25,475.06
  6. Step 6: Final answer
    x = 18,206.97

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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.