Home / 12,586.40-18,867.60-4,686.80

Finding the Fourth Proportional to 12,586.40, 18,867.60 and 4,686.80

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Solution

The fourth proportional to 12,586.40, 18,867.60 and 4,686.80 is: 7,025.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,586.40 : 18,867.60 = 4,686.80 : x
  2. Step 2: Convert to fraction form
    12,586.40/18,867.60 = 4,686.80/x
  3. Step 3: Cross multiply
    12,586.40x = 18,867.60 × 4,686.80
  4. Step 4: Simplify right side
    12,586.40x = 88,428,667.68
  5. Step 5: Solve for x
    x = 88,428,667.68/12,586.40
  6. Step 6: Final answer
    x = 7,025.73

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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.