Home / 15,338.20-21,180-14,550.88

Finding the Fourth Proportional to 15,338.20, 21,180 and 14,550.88

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Solution

The fourth proportional to 15,338.20, 21,180 and 14,550.88 is: 20,092.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,338.20 : 21,180 = 14,550.88 : x
  2. Step 2: Convert to fraction form
    15,338.20/21,180 = 14,550.88/x
  3. Step 3: Cross multiply
    15,338.20x = 21,180 × 14,550.88
  4. Step 4: Simplify right side
    15,338.20x = 308,187,638.40
  5. Step 5: Solve for x
    x = 308,187,638.40/15,338.20
  6. Step 6: Final answer
    x = 20,092.82

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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.