Home / 15,220.32-21,003.84-8,506.56

Finding the Fourth Proportional to 15,220.32, 21,003.84 and 8,506.56

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Solution

The fourth proportional to 15,220.32, 21,003.84 and 8,506.56 is: 11,738.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,220.32 : 21,003.84 = 8,506.56 : x
  2. Step 2: Convert to fraction form
    15,220.32/21,003.84 = 8,506.56/x
  3. Step 3: Cross multiply
    15,220.32x = 21,003.84 × 8,506.56
  4. Step 4: Simplify right side
    15,220.32x = 178,670,425.19
  5. Step 5: Solve for x
    x = 178,670,425.19/15,220.32
  6. Step 6: Final answer
    x = 11,738.94

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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.