Home / 11,620.81-16,049.78-8,999.92

Finding the Fourth Proportional to 11,620.81, 16,049.78 and 8,999.92

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Solution

The fourth proportional to 11,620.81, 16,049.78 and 8,999.92 is: 12,430.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,620.81 : 16,049.78 = 8,999.92 : x
  2. Step 2: Convert to fraction form
    11,620.81/16,049.78 = 8,999.92/x
  3. Step 3: Cross multiply
    11,620.81x = 16,049.78 × 8,999.92
  4. Step 4: Simplify right side
    11,620.81x = 144,446,736.02
  5. Step 5: Solve for x
    x = 144,446,736.02/11,620.81
  6. Step 6: Final answer
    x = 12,430.01

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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.