Home / 28,539.48-39,394.98-21,453.60

Finding the Fourth Proportional to 28,539.48, 39,394.98 and 21,453.60

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Solution

The fourth proportional to 28,539.48, 39,394.98 and 21,453.60 is: 29,613.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,539.48 : 39,394.98 = 21,453.60 : x
  2. Step 2: Convert to fraction form
    28,539.48/39,394.98 = 21,453.60/x
  3. Step 3: Cross multiply
    28,539.48x = 39,394.98 × 21,453.60
  4. Step 4: Simplify right side
    28,539.48x = 845,164,142.93
  5. Step 5: Solve for x
    x = 845,164,142.93/28,539.48
  6. Step 6: Final answer
    x = 29,613.86

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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.