Home / 11,961.55-16,529.70-8,972.19

Finding the Fourth Proportional to 11,961.55, 16,529.70 and 8,972.19

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Solution

The fourth proportional to 11,961.55, 16,529.70 and 8,972.19 is: 12,398.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,961.55 : 16,529.70 = 8,972.19 : x
  2. Step 2: Convert to fraction form
    11,961.55/16,529.70 = 8,972.19/x
  3. Step 3: Cross multiply
    11,961.55x = 16,529.70 × 8,972.19
  4. Step 4: Simplify right side
    11,961.55x = 148,307,613.48
  5. Step 5: Solve for x
    x = 148,307,613.48/11,961.55
  6. Step 6: Final answer
    x = 12,398.70

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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.