Home / 13,875.57-19,145.78-8,207.49

Finding the Fourth Proportional to 13,875.57, 19,145.78 and 8,207.49

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Solution

The fourth proportional to 13,875.57, 19,145.78 and 8,207.49 is: 11,324.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,875.57 : 19,145.78 = 8,207.49 : x
  2. Step 2: Convert to fraction form
    13,875.57/19,145.78 = 8,207.49/x
  3. Step 3: Cross multiply
    13,875.57x = 19,145.78 × 8,207.49
  4. Step 4: Simplify right side
    13,875.57x = 157,138,797.89
  5. Step 5: Solve for x
    x = 157,138,797.89/13,875.57
  6. Step 6: Final answer
    x = 11,324.85

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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.