Home / 18,881.62-28,267.04-13,239.72

Finding the Fourth Proportional to 18,881.62, 28,267.04 and 13,239.72

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Solution

The fourth proportional to 18,881.62, 28,267.04 and 13,239.72 is: 19,820.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,881.62 : 28,267.04 = 13,239.72 : x
  2. Step 2: Convert to fraction form
    18,881.62/28,267.04 = 13,239.72/x
  3. Step 3: Cross multiply
    18,881.62x = 28,267.04 × 13,239.72
  4. Step 4: Simplify right side
    18,881.62x = 374,247,694.83
  5. Step 5: Solve for x
    x = 374,247,694.83/18,881.62
  6. Step 6: Final answer
    x = 19,820.74

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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.