Home / 18,989.80-28,462.98-11,877.27

Finding the Fourth Proportional to 18,989.80, 28,462.98 and 11,877.27

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Solution

The fourth proportional to 18,989.80, 28,462.98 and 11,877.27 is: 17,802.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989.80 : 28,462.98 = 11,877.27 : x
  2. Step 2: Convert to fraction form
    18,989.80/28,462.98 = 11,877.27/x
  3. Step 3: Cross multiply
    18,989.80x = 28,462.98 × 11,877.27
  4. Step 4: Simplify right side
    18,989.80x = 338,062,369.46
  5. Step 5: Solve for x
    x = 338,062,369.46/18,989.80
  6. Step 6: Final answer
    x = 17,802.32

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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.