Home / 20,294.31-27,988.02-12,741.35

Finding the Fourth Proportional to 20,294.31, 27,988.02 and 12,741.35

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Solution

The fourth proportional to 20,294.31, 27,988.02 and 12,741.35 is: 17,571.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,294.31 : 27,988.02 = 12,741.35 : x
  2. Step 2: Convert to fraction form
    20,294.31/27,988.02 = 12,741.35/x
  3. Step 3: Cross multiply
    20,294.31x = 27,988.02 × 12,741.35
  4. Step 4: Simplify right side
    20,294.31x = 356,605,228.60
  5. Step 5: Solve for x
    x = 356,605,228.60/20,294.31
  6. Step 6: Final answer
    x = 17,571.69

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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.