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Finding the Fourth Proportional to 18,403.50, 27,605.25 and 4,552.50

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Solution

The fourth proportional to 18,403.50, 27,605.25 and 4,552.50 is: 6,828.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,403.50 : 27,605.25 = 4,552.50 : x
  2. Step 2: Convert to fraction form
    18,403.50/27,605.25 = 4,552.50/x
  3. Step 3: Cross multiply
    18,403.50x = 27,605.25 × 4,552.50
  4. Step 4: Simplify right side
    18,403.50x = 125,672,900.63
  5. Step 5: Solve for x
    x = 125,672,900.63/18,403.50
  6. Step 6: Final answer
    x = 6,828.75

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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.