Home / 13,118.14-18,088.73-8,861.81

Finding the Fourth Proportional to 13,118.14, 18,088.73 and 8,861.81

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Solution

The fourth proportional to 13,118.14, 18,088.73 and 8,861.81 is: 12,219.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,118.14 : 18,088.73 = 8,861.81 : x
  2. Step 2: Convert to fraction form
    13,118.14/18,088.73 = 8,861.81/x
  3. Step 3: Cross multiply
    13,118.14x = 18,088.73 × 8,861.81
  4. Step 4: Simplify right side
    13,118.14x = 160,298,836.73
  5. Step 5: Solve for x
    x = 160,298,836.73/13,118.14
  6. Step 6: Final answer
    x = 12,219.64

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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.