Home / 10,991.25-15,168.11-7,852.77

Finding the Fourth Proportional to 10,991.25, 15,168.11 and 7,852.77

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Solution

The fourth proportional to 10,991.25, 15,168.11 and 7,852.77 is: 10,836.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,991.25 : 15,168.11 = 7,852.77 : x
  2. Step 2: Convert to fraction form
    10,991.25/15,168.11 = 7,852.77/x
  3. Step 3: Cross multiply
    10,991.25x = 15,168.11 × 7,852.77
  4. Step 4: Simplify right side
    10,991.25x = 119,111,639.90
  5. Step 5: Solve for x
    x = 119,111,639.90/10,991.25
  6. Step 6: Final answer
    x = 10,836.95

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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.