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Finding the Fourth Proportional to 18,774.56, 28,153.54 and 5,624.48

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Solution

The fourth proportional to 18,774.56, 28,153.54 and 5,624.48 is: 8,434.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,774.56 : 28,153.54 = 5,624.48 : x
  2. Step 2: Convert to fraction form
    18,774.56/28,153.54 = 5,624.48/x
  3. Step 3: Cross multiply
    18,774.56x = 28,153.54 × 5,624.48
  4. Step 4: Simplify right side
    18,774.56x = 158,349,022.66
  5. Step 5: Solve for x
    x = 158,349,022.66/18,774.56
  6. Step 6: Final answer
    x = 8,434.23

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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.