Home / 11,309.80-15,612.87-7,539.25

Finding the Fourth Proportional to 11,309.80, 15,612.87 and 7,539.25

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Solution

The fourth proportional to 11,309.80, 15,612.87 and 7,539.25 is: 10,407.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,309.80 : 15,612.87 = 7,539.25 : x
  2. Step 2: Convert to fraction form
    11,309.80/15,612.87 = 7,539.25/x
  3. Step 3: Cross multiply
    11,309.80x = 15,612.87 × 7,539.25
  4. Step 4: Simplify right side
    11,309.80x = 117,709,330.15
  5. Step 5: Solve for x
    x = 117,709,330.15/11,309.80
  6. Step 6: Final answer
    x = 10,407.73

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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.