Home / 11,113.68-15,310.86-7,750.38

Finding the Fourth Proportional to 11,113.68, 15,310.86 and 7,750.38

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Solution

The fourth proportional to 11,113.68, 15,310.86 and 7,750.38 is: 10,677.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,113.68 : 15,310.86 = 7,750.38 : x
  2. Step 2: Convert to fraction form
    11,113.68/15,310.86 = 7,750.38/x
  3. Step 3: Cross multiply
    11,113.68x = 15,310.86 × 7,750.38
  4. Step 4: Simplify right side
    11,113.68x = 118,664,983.13
  5. Step 5: Solve for x
    x = 118,664,983.13/11,113.68
  6. Step 6: Final answer
    x = 10,677.38

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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.