Home / 10,945.40-16,418.10-8,007.80

Finding the Fourth Proportional to 10,945.40, 16,418.10 and 8,007.80

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Solution

The fourth proportional to 10,945.40, 16,418.10 and 8,007.80 is: 12,011.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,945.40 : 16,418.10 = 8,007.80 : x
  2. Step 2: Convert to fraction form
    10,945.40/16,418.10 = 8,007.80/x
  3. Step 3: Cross multiply
    10,945.40x = 16,418.10 × 8,007.80
  4. Step 4: Simplify right side
    10,945.40x = 131,472,861.18
  5. Step 5: Solve for x
    x = 131,472,861.18/10,945.40
  6. Step 6: Final answer
    x = 12,011.70

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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.