Home / 13,939.71-19,228.05-8,270.44

Finding the Fourth Proportional to 13,939.71, 19,228.05 and 8,270.44

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Solution

The fourth proportional to 13,939.71, 19,228.05 and 8,270.44 is: 11,408.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,939.71 : 19,228.05 = 8,270.44 : x
  2. Step 2: Convert to fraction form
    13,939.71/19,228.05 = 8,270.44/x
  3. Step 3: Cross multiply
    13,939.71x = 19,228.05 × 8,270.44
  4. Step 4: Simplify right side
    13,939.71x = 159,024,433.84
  5. Step 5: Solve for x
    x = 159,024,433.84/13,939.71
  6. Step 6: Final answer
    x = 11,408.02

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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.