Home / 28,637.14-42,938.44-12,839.30

Finding the Fourth Proportional to 28,637.14, 42,938.44 and 12,839.30

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Solution

The fourth proportional to 28,637.14, 42,938.44 and 12,839.30 is: 19,251.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,637.14 : 42,938.44 = 12,839.30 : x
  2. Step 2: Convert to fraction form
    28,637.14/42,938.44 = 12,839.30/x
  3. Step 3: Cross multiply
    28,637.14x = 42,938.44 × 12,839.30
  4. Step 4: Simplify right side
    28,637.14x = 551,299,512.69
  5. Step 5: Solve for x
    x = 551,299,512.69/28,637.14
  6. Step 6: Final answer
    x = 19,251.21

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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.