Home / 11,531.20-17,312.36-7,379.32

Finding the Fourth Proportional to 11,531.20, 17,312.36 and 7,379.32

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Solution

The fourth proportional to 11,531.20, 17,312.36 and 7,379.32 is: 11,078.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,531.20 : 17,312.36 = 7,379.32 : x
  2. Step 2: Convert to fraction form
    11,531.20/17,312.36 = 7,379.32/x
  3. Step 3: Cross multiply
    11,531.20x = 17,312.36 × 7,379.32
  4. Step 4: Simplify right side
    11,531.20x = 127,753,444.40
  5. Step 5: Solve for x
    x = 127,753,444.40/11,531.20
  6. Step 6: Final answer
    x = 11,078.94

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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.