Home / 28,472.42-39,228-19,850.60

Finding the Fourth Proportional to 28,472.42, 39,228 and 19,850.60

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Solution

The fourth proportional to 28,472.42, 39,228 and 19,850.60 is: 27,349.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,472.42 : 39,228 = 19,850.60 : x
  2. Step 2: Convert to fraction form
    28,472.42/39,228 = 19,850.60/x
  3. Step 3: Cross multiply
    28,472.42x = 39,228 × 19,850.60
  4. Step 4: Simplify right side
    28,472.42x = 778,699,336.80
  5. Step 5: Solve for x
    x = 778,699,336.80/28,472.42
  6. Step 6: Final answer
    x = 27,349.25

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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.