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Finding the Fourth Proportional to 18,650.84, 27,980.10 and 5,501.96

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Solution

The fourth proportional to 18,650.84, 27,980.10 and 5,501.96 is: 8,254.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,650.84 : 27,980.10 = 5,501.96 : x
  2. Step 2: Convert to fraction form
    18,650.84/27,980.10 = 5,501.96/x
  3. Step 3: Cross multiply
    18,650.84x = 27,980.10 × 5,501.96
  4. Step 4: Simplify right side
    18,650.84x = 153,945,391.00
  5. Step 5: Solve for x
    x = 153,945,391.00/18,650.84
  6. Step 6: Final answer
    x = 8,254.07

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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.