Home / 13,113.45-18,096.57-7,145.12

Finding the Fourth Proportional to 13,113.45, 18,096.57 and 7,145.12

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Solution

The fourth proportional to 13,113.45, 18,096.57 and 7,145.12 is: 9,860.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.45 : 18,096.57 = 7,145.12 : x
  2. Step 2: Convert to fraction form
    13,113.45/18,096.57 = 7,145.12/x
  3. Step 3: Cross multiply
    13,113.45x = 18,096.57 × 7,145.12
  4. Step 4: Simplify right side
    13,113.45x = 129,302,154.43
  5. Step 5: Solve for x
    x = 129,302,154.43/13,113.45
  6. Step 6: Final answer
    x = 9,860.27

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Half scale
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Double scale
Find fourth proportional to 13,114.45, 18,097.95 and 7,146.12
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.