Home / 11,109.67-15,331.53-6,633.81

Finding the Fourth Proportional to 11,109.67, 15,331.53 and 6,633.81

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Solution

The fourth proportional to 11,109.67, 15,331.53 and 6,633.81 is: 9,154.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,109.67 : 15,331.53 = 6,633.81 : x
  2. Step 2: Convert to fraction form
    11,109.67/15,331.53 = 6,633.81/x
  3. Step 3: Cross multiply
    11,109.67x = 15,331.53 × 6,633.81
  4. Step 4: Simplify right side
    11,109.67x = 101,706,423.86
  5. Step 5: Solve for x
    x = 101,706,423.86/11,109.67
  6. Step 6: Final answer
    x = 9,154.77

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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.