Home / 12,156.91-18,235.37-3,948.91

Finding the Fourth Proportional to 12,156.91, 18,235.37 and 3,948.91

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Solution

The fourth proportional to 12,156.91, 18,235.37 and 3,948.91 is: 5,923.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,156.91 : 18,235.37 = 3,948.91 : x
  2. Step 2: Convert to fraction form
    12,156.91/18,235.37 = 3,948.91/x
  3. Step 3: Cross multiply
    12,156.91x = 18,235.37 × 3,948.91
  4. Step 4: Simplify right side
    12,156.91x = 72,009,834.95
  5. Step 5: Solve for x
    x = 72,009,834.95/12,156.91
  6. Step 6: Final answer
    x = 5,923.37

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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.