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Finding the Fourth Proportional to 18,999.82, 28,501.62 and 15,522.76

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Solution

The fourth proportional to 18,999.82, 28,501.62 and 15,522.76 is: 23,285.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,999.82 : 28,501.62 = 15,522.76 : x
  2. Step 2: Convert to fraction form
    18,999.82/28,501.62 = 15,522.76/x
  3. Step 3: Cross multiply
    18,999.82x = 28,501.62 × 15,522.76
  4. Step 4: Simplify right side
    18,999.82x = 442,423,806.87
  5. Step 5: Solve for x
    x = 442,423,806.87/18,999.82
  6. Step 6: Final answer
    x = 23,285.68

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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.