Home / 15,743.52-21,720.36-8,933.60

Finding the Fourth Proportional to 15,743.52, 21,720.36 and 8,933.60

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Solution

The fourth proportional to 15,743.52, 21,720.36 and 8,933.60 is: 12,325.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,743.52 : 21,720.36 = 8,933.60 : x
  2. Step 2: Convert to fraction form
    15,743.52/21,720.36 = 8,933.60/x
  3. Step 3: Cross multiply
    15,743.52x = 21,720.36 × 8,933.60
  4. Step 4: Simplify right side
    15,743.52x = 194,040,963.43
  5. Step 5: Solve for x
    x = 194,040,963.43/15,743.52
  6. Step 6: Final answer
    x = 12,325.13

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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.