Home / 10,009.40-13,816.86-8,959.64

Finding the Fourth Proportional to 10,009.40, 13,816.86 and 8,959.64

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Solution

The fourth proportional to 10,009.40, 13,816.86 and 8,959.64 is: 12,367.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,009.40 : 13,816.86 = 8,959.64 : x
  2. Step 2: Convert to fraction form
    10,009.40/13,816.86 = 8,959.64/x
  3. Step 3: Cross multiply
    10,009.40x = 13,816.86 × 8,959.64
  4. Step 4: Simplify right side
    10,009.40x = 123,794,091.53
  5. Step 5: Solve for x
    x = 123,794,091.53/10,009.40
  6. Step 6: Final answer
    x = 12,367.78

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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.