Home / 15,150.13-20,908.80-8,867.77

Finding the Fourth Proportional to 15,150.13, 20,908.80 and 8,867.77

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Solution

The fourth proportional to 15,150.13, 20,908.80 and 8,867.77 is: 12,238.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,150.13 : 20,908.80 = 8,867.77 : x
  2. Step 2: Convert to fraction form
    15,150.13/20,908.80 = 8,867.77/x
  3. Step 3: Cross multiply
    15,150.13x = 20,908.80 × 8,867.77
  4. Step 4: Simplify right side
    15,150.13x = 185,414,280.49
  5. Step 5: Solve for x
    x = 185,414,280.49/15,150.13
  6. Step 6: Final answer
    x = 12,238.47

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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.