Home / 11,170.19-15,414.26-6,390.23

Finding the Fourth Proportional to 11,170.19, 15,414.26 and 6,390.23

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Solution

The fourth proportional to 11,170.19, 15,414.26 and 6,390.23 is: 8,818.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,170.19 : 15,414.26 = 6,390.23 : x
  2. Step 2: Convert to fraction form
    11,170.19/15,414.26 = 6,390.23/x
  3. Step 3: Cross multiply
    11,170.19x = 15,414.26 × 6,390.23
  4. Step 4: Simplify right side
    11,170.19x = 98,500,666.68
  5. Step 5: Solve for x
    x = 98,500,666.68/11,170.19
  6. Step 6: Final answer
    x = 8,818.17

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Half scale
Find fourth proportional to 22,340.38, 30,828.52 and 12,780.46
Double scale
Find fourth proportional to 11,171.19, 15,415.64 and 6,391.23
Similar ratio
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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.