Home / 18,667.74-28,001.68-12,806.58

Finding the Fourth Proportional to 18,667.74, 28,001.68 and 12,806.58

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Solution

The fourth proportional to 18,667.74, 28,001.68 and 12,806.58 is: 19,209.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,667.74 : 28,001.68 = 12,806.58 : x
  2. Step 2: Convert to fraction form
    18,667.74/28,001.68 = 12,806.58/x
  3. Step 3: Cross multiply
    18,667.74x = 28,001.68 × 12,806.58
  4. Step 4: Simplify right side
    18,667.74x = 358,605,755.05
  5. Step 5: Solve for x
    x = 358,605,755.05/18,667.74
  6. Step 6: Final answer
    x = 19,209.92

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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.