Home / 13,113.94-18,097.68-7,145.77

Finding the Fourth Proportional to 13,113.94, 18,097.68 and 7,145.77

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Solution

The fourth proportional to 13,113.94, 18,097.68 and 7,145.77 is: 9,861.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.94 : 18,097.68 = 7,145.77 : x
  2. Step 2: Convert to fraction form
    13,113.94/18,097.68 = 7,145.77/x
  3. Step 3: Cross multiply
    13,113.94x = 18,097.68 × 7,145.77
  4. Step 4: Simplify right side
    13,113.94x = 129,321,858.81
  5. Step 5: Solve for x
    x = 129,321,858.81/13,113.94
  6. Step 6: Final answer
    x = 9,861.40

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Half scale
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Double scale
Find fourth proportional to 13,114.94, 18,099.06 and 7,146.77
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.