Home / 11,335.40-15,636.69-7,239.56

Finding the Fourth Proportional to 11,335.40, 15,636.69 and 7,239.56

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Solution

The fourth proportional to 11,335.40, 15,636.69 and 7,239.56 is: 9,986.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,335.40 : 15,636.69 = 7,239.56 : x
  2. Step 2: Convert to fraction form
    11,335.40/15,636.69 = 7,239.56/x
  3. Step 3: Cross multiply
    11,335.40x = 15,636.69 × 7,239.56
  4. Step 4: Simplify right side
    11,335.40x = 113,202,755.46
  5. Step 5: Solve for x
    x = 113,202,755.46/11,335.40
  6. Step 6: Final answer
    x = 9,986.66

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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.