Home / 11,310.60-15,611.49-7,280.16

Finding the Fourth Proportional to 11,310.60, 15,611.49 and 7,280.16

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Solution

The fourth proportional to 11,310.60, 15,611.49 and 7,280.16 is: 10,048.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,310.60 : 15,611.49 = 7,280.16 : x
  2. Step 2: Convert to fraction form
    11,310.60/15,611.49 = 7,280.16/x
  3. Step 3: Cross multiply
    11,310.60x = 15,611.49 × 7,280.16
  4. Step 4: Simplify right side
    11,310.60x = 113,654,145.04
  5. Step 5: Solve for x
    x = 113,654,145.04/11,310.60
  6. Step 6: Final answer
    x = 10,048.46

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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.