Home / 9,911.38-13,677.89-5,434.86

Finding the Fourth Proportional to 9,911.38, 13,677.89 and 5,434.86

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Solution

The fourth proportional to 9,911.38, 13,677.89 and 5,434.86 is: 7,500.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,911.38 : 13,677.89 = 5,434.86 : x
  2. Step 2: Convert to fraction form
    9,911.38/13,677.89 = 5,434.86/x
  3. Step 3: Cross multiply
    9,911.38x = 13,677.89 × 5,434.86
  4. Step 4: Simplify right side
    9,911.38x = 74,337,403.66
  5. Step 5: Solve for x
    x = 74,337,403.66/9,911.38
  6. Step 6: Final answer
    x = 7,500.21

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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.