Home / 10,390.37-15,601.91-8,208.86

Finding the Fourth Proportional to 10,390.37, 15,601.91 and 8,208.86

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Solution

The fourth proportional to 10,390.37, 15,601.91 and 8,208.86 is: 12,326.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,390.37 : 15,601.91 = 8,208.86 : x
  2. Step 2: Convert to fraction form
    10,390.37/15,601.91 = 8,208.86/x
  3. Step 3: Cross multiply
    10,390.37x = 15,601.91 × 8,208.86
  4. Step 4: Simplify right side
    10,390.37x = 128,073,775.87
  5. Step 5: Solve for x
    x = 128,073,775.87/10,390.37
  6. Step 6: Final answer
    x = 12,326.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.