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Finding the Fourth Proportional to 18,285.51, 27,429.21 and 5,806.51

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Solution

The fourth proportional to 18,285.51, 27,429.21 and 5,806.51 is: 8,710.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,285.51 : 27,429.21 = 5,806.51 : x
  2. Step 2: Convert to fraction form
    18,285.51/27,429.21 = 5,806.51/x
  3. Step 3: Cross multiply
    18,285.51x = 27,429.21 × 5,806.51
  4. Step 4: Simplify right side
    18,285.51x = 159,267,913.58
  5. Step 5: Solve for x
    x = 159,267,913.58/18,285.51
  6. Step 6: Final answer
    x = 8,710.06

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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.