Home / 18,923.83-28,356.57-11,983.75

Finding the Fourth Proportional to 18,923.83, 28,356.57 and 11,983.75

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Solution

The fourth proportional to 18,923.83, 28,356.57 and 11,983.75 is: 17,957.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,923.83 : 28,356.57 = 11,983.75 : x
  2. Step 2: Convert to fraction form
    18,923.83/28,356.57 = 11,983.75/x
  3. Step 3: Cross multiply
    18,923.83x = 28,356.57 × 11,983.75
  4. Step 4: Simplify right side
    18,923.83x = 339,818,045.74
  5. Step 5: Solve for x
    x = 339,818,045.74/18,923.83
  6. Step 6: Final answer
    x = 17,957.15

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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.