Home / 18,531.15-27,799.43-5,381.81

Finding the Fourth Proportional to 18,531.15, 27,799.43 and 5,381.81

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Solution

The fourth proportional to 18,531.15, 27,799.43 and 5,381.81 is: 8,073.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,531.15 : 27,799.43 = 5,381.81 : x
  2. Step 2: Convert to fraction form
    18,531.15/27,799.43 = 5,381.81/x
  3. Step 3: Cross multiply
    18,531.15x = 27,799.43 × 5,381.81
  4. Step 4: Simplify right side
    18,531.15x = 149,611,271.11
  5. Step 5: Solve for x
    x = 149,611,271.11/18,531.15
  6. Step 6: Final answer
    x = 8,073.50

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1.5x scale

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.