Home / 12,177.81-18,266.36-3,856.68

Finding the Fourth Proportional to 12,177.81, 18,266.36 and 3,856.68

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Solution

The fourth proportional to 12,177.81, 18,266.36 and 3,856.68 is: 5,784.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,177.81 : 18,266.36 = 3,856.68 : x
  2. Step 2: Convert to fraction form
    12,177.81/18,266.36 = 3,856.68/x
  3. Step 3: Cross multiply
    12,177.81x = 18,266.36 × 3,856.68
  4. Step 4: Simplify right side
    12,177.81x = 70,447,486.00
  5. Step 5: Solve for x
    x = 70,447,486.00/12,177.81
  6. Step 6: Final answer
    x = 5,784.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.