Home / 13,144.96-18,140.08-7,176.76

Finding the Fourth Proportional to 13,144.96, 18,140.08 and 7,176.76

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Solution

The fourth proportional to 13,144.96, 18,140.08 and 7,176.76 is: 9,903.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,144.96 : 18,140.08 = 7,176.76 : x
  2. Step 2: Convert to fraction form
    13,144.96/18,140.08 = 7,176.76/x
  3. Step 3: Cross multiply
    13,144.96x = 18,140.08 × 7,176.76
  4. Step 4: Simplify right side
    13,144.96x = 130,187,000.54
  5. Step 5: Solve for x
    x = 130,187,000.54/13,144.96
  6. Step 6: Final answer
    x = 9,903.95

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Half scale
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Double scale
Find fourth proportional to 13,145.96, 18,141.46 and 7,177.76
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.