Home / 28,507.44-39,339.38-15,759.86

Finding the Fourth Proportional to 28,507.44, 39,339.38 and 15,759.86

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Solution

The fourth proportional to 28,507.44, 39,339.38 and 15,759.86 is: 21,748.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,507.44 : 39,339.38 = 15,759.86 : x
  2. Step 2: Convert to fraction form
    28,507.44/39,339.38 = 15,759.86/x
  3. Step 3: Cross multiply
    28,507.44x = 39,339.38 × 15,759.86
  4. Step 4: Simplify right side
    28,507.44x = 619,983,121.29
  5. Step 5: Solve for x
    x = 619,983,121.29/28,507.44
  6. Step 6: Final answer
    x = 21,748.12

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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.