Home / 18,701.53-28,076.79-13,157.47

Finding the Fourth Proportional to 18,701.53, 28,076.79 and 13,157.47

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Solution

The fourth proportional to 18,701.53, 28,076.79 and 13,157.47 is: 19,753.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,701.53 : 28,076.79 = 13,157.47 : x
  2. Step 2: Convert to fraction form
    18,701.53/28,076.79 = 13,157.47/x
  3. Step 3: Cross multiply
    18,701.53x = 28,076.79 × 13,157.47
  4. Step 4: Simplify right side
    18,701.53x = 369,419,522.12
  5. Step 5: Solve for x
    x = 369,419,522.12/18,701.53
  6. Step 6: Final answer
    x = 19,753.44

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1.5x scale

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.