Home / 11,920.48-16,450.11-6,615.19

Finding the Fourth Proportional to 11,920.48, 16,450.11 and 6,615.19

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Solution

The fourth proportional to 11,920.48, 16,450.11 and 6,615.19 is: 9,128.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,920.48 : 16,450.11 = 6,615.19 : x
  2. Step 2: Convert to fraction form
    11,920.48/16,450.11 = 6,615.19/x
  3. Step 3: Cross multiply
    11,920.48x = 16,450.11 × 6,615.19
  4. Step 4: Simplify right side
    11,920.48x = 108,820,549.81
  5. Step 5: Solve for x
    x = 108,820,549.81/11,920.48
  6. Step 6: Final answer
    x = 9,128.87

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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.