Home / 18,667.78-28,001.68-5,342.16

Finding the Fourth Proportional to 18,667.78, 28,001.68 and 5,342.16

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Solution

The fourth proportional to 18,667.78, 28,001.68 and 5,342.16 is: 8,013.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,667.78 : 28,001.68 = 5,342.16 : x
  2. Step 2: Convert to fraction form
    18,667.78/28,001.68 = 5,342.16/x
  3. Step 3: Cross multiply
    18,667.78x = 28,001.68 × 5,342.16
  4. Step 4: Simplify right side
    18,667.78x = 149,589,454.83
  5. Step 5: Solve for x
    x = 149,589,454.83/18,667.78
  6. Step 6: Final answer
    x = 8,013.24

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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.