Home / 28,396.83-39,187.89-15,650.47

Finding the Fourth Proportional to 28,396.83, 39,187.89 and 15,650.47

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Solution

The fourth proportional to 28,396.83, 39,187.89 and 15,650.47 is: 21,597.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,396.83 : 39,187.89 = 15,650.47 : x
  2. Step 2: Convert to fraction form
    28,396.83/39,187.89 = 15,650.47/x
  3. Step 3: Cross multiply
    28,396.83x = 39,187.89 × 15,650.47
  4. Step 4: Simplify right side
    28,396.83x = 613,308,945.79
  5. Step 5: Solve for x
    x = 613,308,945.79/28,396.83
  6. Step 6: Final answer
    x = 21,597.79

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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.