Home / 15,022.55-20,729.68-8,647.45

Finding the Fourth Proportional to 15,022.55, 20,729.68 and 8,647.45

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Solution

The fourth proportional to 15,022.55, 20,729.68 and 8,647.45 is: 11,932.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,022.55 : 20,729.68 = 8,647.45 : x
  2. Step 2: Convert to fraction form
    15,022.55/20,729.68 = 8,647.45/x
  3. Step 3: Cross multiply
    15,022.55x = 20,729.68 × 8,647.45
  4. Step 4: Simplify right side
    15,022.55x = 179,258,871.32
  5. Step 5: Solve for x
    x = 179,258,871.32/15,022.55
  6. Step 6: Final answer
    x = 11,932.65

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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.