Home / 15,147.78-20,901.45-8,433.24

Finding the Fourth Proportional to 15,147.78, 20,901.45 and 8,433.24

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Solution

The fourth proportional to 15,147.78, 20,901.45 and 8,433.24 is: 11,636.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,147.78 : 20,901.45 = 8,433.24 : x
  2. Step 2: Convert to fraction form
    15,147.78/20,901.45 = 8,433.24/x
  3. Step 3: Cross multiply
    15,147.78x = 20,901.45 × 8,433.24
  4. Step 4: Simplify right side
    15,147.78x = 176,266,944.20
  5. Step 5: Solve for x
    x = 176,266,944.20/15,147.78
  6. Step 6: Final answer
    x = 11,636.49

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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.