Home / 13,118.29-18,102.36-7,454.23

Finding the Fourth Proportional to 13,118.29, 18,102.36 and 7,454.23

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Solution

The fourth proportional to 13,118.29, 18,102.36 and 7,454.23 is: 10,286.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,118.29 : 18,102.36 = 7,454.23 : x
  2. Step 2: Convert to fraction form
    13,118.29/18,102.36 = 7,454.23/x
  3. Step 3: Cross multiply
    13,118.29x = 18,102.36 × 7,454.23
  4. Step 4: Simplify right side
    13,118.29x = 134,939,154.98
  5. Step 5: Solve for x
    x = 134,939,154.98/13,118.29
  6. Step 6: Final answer
    x = 10,286.34

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Half scale
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Double scale
Find fourth proportional to 13,119.29, 18,103.74 and 7,455.23
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.