Home / 10,286.96-14,210.52-8,188.40

Finding the Fourth Proportional to 10,286.96, 14,210.52 and 8,188.40

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Solution

The fourth proportional to 10,286.96, 14,210.52 and 8,188.40 is: 11,311.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,286.96 : 14,210.52 = 8,188.40 : x
  2. Step 2: Convert to fraction form
    10,286.96/14,210.52 = 8,188.40/x
  3. Step 3: Cross multiply
    10,286.96x = 14,210.52 × 8,188.40
  4. Step 4: Simplify right side
    10,286.96x = 116,361,421.97
  5. Step 5: Solve for x
    x = 116,361,421.97/10,286.96
  6. Step 6: Final answer
    x = 11,311.55

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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.