Home / 13,181.04-18,189.84-7,212.76

Finding the Fourth Proportional to 13,181.04, 18,189.84 and 7,212.76

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Solution

The fourth proportional to 13,181.04, 18,189.84 and 7,212.76 is: 9,953.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,181.04 : 18,189.84 = 7,212.76 : x
  2. Step 2: Convert to fraction form
    13,181.04/18,189.84 = 7,212.76/x
  3. Step 3: Cross multiply
    13,181.04x = 18,189.84 × 7,212.76
  4. Step 4: Simplify right side
    13,181.04x = 131,198,950.36
  5. Step 5: Solve for x
    x = 131,198,950.36/13,181.04
  6. Step 6: Final answer
    x = 9,953.61

Related Problems

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Half scale
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Double scale
Find fourth proportional to 13,182.04, 18,191.22 and 7,213.76
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.