Home / 18,680.58-28,011.14-5,531.18

Finding the Fourth Proportional to 18,680.58, 28,011.14 and 5,531.18

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Solution

The fourth proportional to 18,680.58, 28,011.14 and 5,531.18 is: 8,293.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,680.58 : 28,011.14 = 5,531.18 : x
  2. Step 2: Convert to fraction form
    18,680.58/28,011.14 = 5,531.18/x
  3. Step 3: Cross multiply
    18,680.58x = 28,011.14 × 5,531.18
  4. Step 4: Simplify right side
    18,680.58x = 154,934,657.35
  5. Step 5: Solve for x
    x = 154,934,657.35/18,680.58
  6. Step 6: Final answer
    x = 8,293.89

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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.