Home / 11,972.60-16,520.20-6,667.28

Finding the Fourth Proportional to 11,972.60, 16,520.20 and 6,667.28

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Solution

The fourth proportional to 11,972.60, 16,520.20 and 6,667.28 is: 9,199.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,972.60 : 16,520.20 = 6,667.28 : x
  2. Step 2: Convert to fraction form
    11,972.60/16,520.20 = 6,667.28/x
  3. Step 3: Cross multiply
    11,972.60x = 16,520.20 × 6,667.28
  4. Step 4: Simplify right side
    11,972.60x = 110,144,799.06
  5. Step 5: Solve for x
    x = 110,144,799.06/11,972.60
  6. Step 6: Final answer
    x = 9,199.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.