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Finding the Fourth Proportional to 18,714.84, 28,085.63 and 13,797.33

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Solution

The fourth proportional to 18,714.84, 28,085.63 and 13,797.33 is: 20,705.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,714.84 : 28,085.63 = 13,797.33 : x
  2. Step 2: Convert to fraction form
    18,714.84/28,085.63 = 13,797.33/x
  3. Step 3: Cross multiply
    18,714.84x = 28,085.63 × 13,797.33
  4. Step 4: Simplify right side
    18,714.84x = 387,506,636.38
  5. Step 5: Solve for x
    x = 387,506,636.38/18,714.84
  6. Step 6: Final answer
    x = 20,705.85

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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.