Home / 12,455.72-18,667.78-12,323.89

Finding the Fourth Proportional to 12,455.72, 18,667.78 and 12,323.89

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Solution

The fourth proportional to 12,455.72, 18,667.78 and 12,323.89 is: 18,470.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.72 : 18,667.78 = 12,323.89 : x
  2. Step 2: Convert to fraction form
    12,455.72/18,667.78 = 12,323.89/x
  3. Step 3: Cross multiply
    12,455.72x = 18,667.78 × 12,323.89
  4. Step 4: Simplify right side
    12,455.72x = 230,059,667.26
  5. Step 5: Solve for x
    x = 230,059,667.26/12,455.72
  6. Step 6: Final answer
    x = 18,470.20

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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.