Home / 11,346.20-15,645.08-7,761.74

Finding the Fourth Proportional to 11,346.20, 15,645.08 and 7,761.74

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Solution

The fourth proportional to 11,346.20, 15,645.08 and 7,761.74 is: 10,702.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,346.20 : 15,645.08 = 7,761.74 : x
  2. Step 2: Convert to fraction form
    11,346.20/15,645.08 = 7,761.74/x
  3. Step 3: Cross multiply
    11,346.20x = 15,645.08 × 7,761.74
  4. Step 4: Simplify right side
    11,346.20x = 121,433,043.24
  5. Step 5: Solve for x
    x = 121,433,043.24/11,346.20
  6. Step 6: Final answer
    x = 10,702.53

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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.