Home / 13,500.60-18,639.50-8,471.72

Finding the Fourth Proportional to 13,500.60, 18,639.50 and 8,471.72

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Solution

The fourth proportional to 13,500.60, 18,639.50 and 8,471.72 is: 11,696.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,500.60 : 18,639.50 = 8,471.72 : x
  2. Step 2: Convert to fraction form
    13,500.60/18,639.50 = 8,471.72/x
  3. Step 3: Cross multiply
    13,500.60x = 18,639.50 × 8,471.72
  4. Step 4: Simplify right side
    13,500.60x = 157,908,624.94
  5. Step 5: Solve for x
    x = 157,908,624.94/13,500.60
  6. Step 6: Final answer
    x = 11,696.42

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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.