Home / 13,601.46-18,764.64-8,287.05

Finding the Fourth Proportional to 13,601.46, 18,764.64 and 8,287.05

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Solution

The fourth proportional to 13,601.46, 18,764.64 and 8,287.05 is: 11,432.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,601.46 : 18,764.64 = 8,287.05 : x
  2. Step 2: Convert to fraction form
    13,601.46/18,764.64 = 8,287.05/x
  3. Step 3: Cross multiply
    13,601.46x = 18,764.64 × 8,287.05
  4. Step 4: Simplify right side
    13,601.46x = 155,503,509.91
  5. Step 5: Solve for x
    x = 155,503,509.91/13,601.46
  6. Step 6: Final answer
    x = 11,432.85

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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.