Home / 15,772.05-21,765.47-8,698.41

Finding the Fourth Proportional to 15,772.05, 21,765.47 and 8,698.41

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Solution

The fourth proportional to 15,772.05, 21,765.47 and 8,698.41 is: 12,003.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,772.05 : 21,765.47 = 8,698.41 : x
  2. Step 2: Convert to fraction form
    15,772.05/21,765.47 = 8,698.41/x
  3. Step 3: Cross multiply
    15,772.05x = 21,765.47 × 8,698.41
  4. Step 4: Simplify right side
    15,772.05x = 189,324,938.41
  5. Step 5: Solve for x
    x = 189,324,938.41/15,772.05
  6. Step 6: Final answer
    x = 12,003.83

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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.