Home / 39,988.89-60,019.68-21,284.57

Finding the Fourth Proportional to 39,988.89, 60,019.68 and 21,284.57

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Solution

The fourth proportional to 39,988.89, 60,019.68 and 21,284.57 is: 31,946.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,988.89 : 60,019.68 = 21,284.57 : x
  2. Step 2: Convert to fraction form
    39,988.89/60,019.68 = 21,284.57/x
  3. Step 3: Cross multiply
    39,988.89x = 60,019.68 × 21,284.57
  4. Step 4: Simplify right side
    39,988.89x = 1,277,493,310.20
  5. Step 5: Solve for x
    x = 1,277,493,310.20/39,988.89
  6. Step 6: Final answer
    x = 31,946.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.