Home / 18,983.57-28,480.88-7,888.19

Finding the Fourth Proportional to 18,983.57, 28,480.88 and 7,888.19

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Solution

The fourth proportional to 18,983.57, 28,480.88 and 7,888.19 is: 11,834.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,983.57 : 28,480.88 = 7,888.19 : x
  2. Step 2: Convert to fraction form
    18,983.57/28,480.88 = 7,888.19/x
  3. Step 3: Cross multiply
    18,983.57x = 28,480.88 × 7,888.19
  4. Step 4: Simplify right side
    18,983.57x = 224,662,470.12
  5. Step 5: Solve for x
    x = 224,662,470.12/18,983.57
  6. Step 6: Final answer
    x = 11,834.58

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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.