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Finding the Fourth Proportional to 18,841.64, 28,267.19 and 13,305.81

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Solution

The fourth proportional to 18,841.64, 28,267.19 and 13,305.81 is: 19,962.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,841.64 : 28,267.19 = 13,305.81 : x
  2. Step 2: Convert to fraction form
    18,841.64/28,267.19 = 13,305.81/x
  3. Step 3: Cross multiply
    18,841.64x = 28,267.19 × 13,305.81
  4. Step 4: Simplify right side
    18,841.64x = 376,117,792.84
  5. Step 5: Solve for x
    x = 376,117,792.84/18,841.64
  6. Step 6: Final answer
    x = 19,962.06

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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.