Home / 13,390.86-20,087.37-4,156.86

Finding the Fourth Proportional to 13,390.86, 20,087.37 and 4,156.86

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Solution

The fourth proportional to 13,390.86, 20,087.37 and 4,156.86 is: 6,235.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,390.86 : 20,087.37 = 4,156.86 : x
  2. Step 2: Convert to fraction form
    13,390.86/20,087.37 = 4,156.86/x
  3. Step 3: Cross multiply
    13,390.86x = 20,087.37 × 4,156.86
  4. Step 4: Simplify right side
    13,390.86x = 83,500,384.86
  5. Step 5: Solve for x
    x = 83,500,384.86/13,390.86
  6. Step 6: Final answer
    x = 6,235.63

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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.