Home / 15,453.28-21,309.50-13,222.54

Finding the Fourth Proportional to 15,453.28, 21,309.50 and 13,222.54

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Solution

The fourth proportional to 15,453.28, 21,309.50 and 13,222.54 is: 18,233.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,453.28 : 21,309.50 = 13,222.54 : x
  2. Step 2: Convert to fraction form
    15,453.28/21,309.50 = 13,222.54/x
  3. Step 3: Cross multiply
    15,453.28x = 21,309.50 × 13,222.54
  4. Step 4: Simplify right side
    15,453.28x = 281,765,543.47
  5. Step 5: Solve for x
    x = 281,765,543.47/15,453.28
  6. Step 6: Final answer
    x = 18,233.39

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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.