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Finding the Fourth Proportional to 18,774.33, 28,157.42 and 5,623.17

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Solution

The fourth proportional to 18,774.33, 28,157.42 and 5,623.17 is: 8,433.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,774.33 : 28,157.42 = 5,623.17 : x
  2. Step 2: Convert to fraction form
    18,774.33/28,157.42 = 5,623.17/x
  3. Step 3: Cross multiply
    18,774.33x = 28,157.42 × 5,623.17
  4. Step 4: Simplify right side
    18,774.33x = 158,333,931.31
  5. Step 5: Solve for x
    x = 158,333,931.31/18,774.33
  6. Step 6: Final answer
    x = 8,433.53

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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.