Home / 28,584.42-39,459.36-21,513.12

Finding the Fourth Proportional to 28,584.42, 39,459.36 and 21,513.12

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Solution

The fourth proportional to 28,584.42, 39,459.36 and 21,513.12 is: 29,697.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,584.42 : 39,459.36 = 21,513.12 : x
  2. Step 2: Convert to fraction form
    28,584.42/39,459.36 = 21,513.12/x
  3. Step 3: Cross multiply
    28,584.42x = 39,459.36 × 21,513.12
  4. Step 4: Simplify right side
    28,584.42x = 848,893,946.80
  5. Step 5: Solve for x
    x = 848,893,946.80/28,584.42
  6. Step 6: Final answer
    x = 29,697.78

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.