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Finding the Fourth Proportional to 18,569.80, 27,830.40 and 7,467.40

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Solution

The fourth proportional to 18,569.80, 27,830.40 and 7,467.40 is: 11,191.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,569.80 : 27,830.40 = 7,467.40 : x
  2. Step 2: Convert to fraction form
    18,569.80/27,830.40 = 7,467.40/x
  3. Step 3: Cross multiply
    18,569.80x = 27,830.40 × 7,467.40
  4. Step 4: Simplify right side
    18,569.80x = 207,820,728.96
  5. Step 5: Solve for x
    x = 207,820,728.96/18,569.80
  6. Step 6: Final answer
    x = 11,191.33

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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.