Home / 15,550.28-21,472.80-13,334.12

Finding the Fourth Proportional to 15,550.28, 21,472.80 and 13,334.12

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Solution

The fourth proportional to 15,550.28, 21,472.80 and 13,334.12 is: 18,412.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,550.28 : 21,472.80 = 13,334.12 : x
  2. Step 2: Convert to fraction form
    15,550.28/21,472.80 = 13,334.12/x
  3. Step 3: Cross multiply
    15,550.28x = 21,472.80 × 13,334.12
  4. Step 4: Simplify right side
    15,550.28x = 286,320,891.94
  5. Step 5: Solve for x
    x = 286,320,891.94/15,550.28
  6. Step 6: Final answer
    x = 18,412.59

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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.