Home / 10,881.60-15,005.20-8,054.91

Finding the Fourth Proportional to 10,881.60, 15,005.20 and 8,054.91

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Solution

The fourth proportional to 10,881.60, 15,005.20 and 8,054.91 is: 11,107.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,881.60 : 15,005.20 = 8,054.91 : x
  2. Step 2: Convert to fraction form
    10,881.60/15,005.20 = 8,054.91/x
  3. Step 3: Cross multiply
    10,881.60x = 15,005.20 × 8,054.91
  4. Step 4: Simplify right side
    10,881.60x = 120,865,535.53
  5. Step 5: Solve for x
    x = 120,865,535.53/10,881.60
  6. Step 6: Final answer
    x = 11,107.33

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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.