Home / 13,381.17-18,463.35-8,076.28

Finding the Fourth Proportional to 13,381.17, 18,463.35 and 8,076.28

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Solution

The fourth proportional to 13,381.17, 18,463.35 and 8,076.28 is: 11,143.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.17 : 18,463.35 = 8,076.28 : x
  2. Step 2: Convert to fraction form
    13,381.17/18,463.35 = 8,076.28/x
  3. Step 3: Cross multiply
    13,381.17x = 18,463.35 × 8,076.28
  4. Step 4: Simplify right side
    13,381.17x = 149,115,168.47
  5. Step 5: Solve for x
    x = 149,115,168.47/13,381.17
  6. Step 6: Final answer
    x = 11,143.66

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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.