Home / 28,507.27-39,339.77-15,760.79

Finding the Fourth Proportional to 28,507.27, 39,339.77 and 15,760.79

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Solution

The fourth proportional to 28,507.27, 39,339.77 and 15,760.79 is: 21,749.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,507.27 : 39,339.77 = 15,760.79 : x
  2. Step 2: Convert to fraction form
    28,507.27/39,339.77 = 15,760.79/x
  3. Step 3: Cross multiply
    28,507.27x = 39,339.77 × 15,760.79
  4. Step 4: Simplify right side
    28,507.27x = 620,025,853.62
  5. Step 5: Solve for x
    x = 620,025,853.62/28,507.27
  6. Step 6: Final answer
    x = 21,749.75

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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.