Home / 15,589.44-21,507.28-9,922.72

Finding the Fourth Proportional to 15,589.44, 21,507.28 and 9,922.72

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Solution

The fourth proportional to 15,589.44, 21,507.28 and 9,922.72 is: 13,689.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,589.44 : 21,507.28 = 9,922.72 : x
  2. Step 2: Convert to fraction form
    15,589.44/21,507.28 = 9,922.72/x
  3. Step 3: Cross multiply
    15,589.44x = 21,507.28 × 9,922.72
  4. Step 4: Simplify right side
    15,589.44x = 213,410,717.40
  5. Step 5: Solve for x
    x = 213,410,717.40/15,589.44
  6. Step 6: Final answer
    x = 13,689.44

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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.