Home / 13,939.95-19,228.38-8,270.69

Finding the Fourth Proportional to 13,939.95, 19,228.38 and 8,270.69

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Solution

The fourth proportional to 13,939.95, 19,228.38 and 8,270.69 is: 11,408.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,939.95 : 19,228.38 = 8,270.69 : x
  2. Step 2: Convert to fraction form
    13,939.95/19,228.38 = 8,270.69/x
  3. Step 3: Cross multiply
    13,939.95x = 19,228.38 × 8,270.69
  4. Step 4: Simplify right side
    13,939.95x = 159,031,874.04
  5. Step 5: Solve for x
    x = 159,031,874.04/13,939.95
  6. Step 6: Final answer
    x = 11,408.35

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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.