Home / 20,346.71-28,069.11-13,179.01

Finding the Fourth Proportional to 20,346.71, 28,069.11 and 13,179.01

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Solution

The fourth proportional to 20,346.71, 28,069.11 and 13,179.01 is: 18,180.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,346.71 : 28,069.11 = 13,179.01 : x
  2. Step 2: Convert to fraction form
    20,346.71/28,069.11 = 13,179.01/x
  3. Step 3: Cross multiply
    20,346.71x = 28,069.11 × 13,179.01
  4. Step 4: Simplify right side
    20,346.71x = 369,923,092.27
  5. Step 5: Solve for x
    x = 369,923,092.27/20,346.71
  6. Step 6: Final answer
    x = 18,180.98

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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.