Home / 28,397.21-39,188.41-15,650.85

Finding the Fourth Proportional to 28,397.21, 39,188.41 and 15,650.85

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Solution

The fourth proportional to 28,397.21, 39,188.41 and 15,650.85 is: 21,598.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,397.21 : 39,188.41 = 15,650.85 : x
  2. Step 2: Convert to fraction form
    28,397.21/39,188.41 = 15,650.85/x
  3. Step 3: Cross multiply
    28,397.21x = 39,188.41 × 15,650.85
  4. Step 4: Simplify right side
    28,397.21x = 613,331,789.55
  5. Step 5: Solve for x
    x = 613,331,789.55/28,397.21
  6. Step 6: Final answer
    x = 21,598.31

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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.