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Finding the Fourth Proportional to 18,686.89, 28,044.24 and 8,829.19

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Solution

The fourth proportional to 18,686.89, 28,044.24 and 8,829.19 is: 13,250.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686.89 : 28,044.24 = 8,829.19 : x
  2. Step 2: Convert to fraction form
    18,686.89/28,044.24 = 8,829.19/x
  3. Step 3: Cross multiply
    18,686.89x = 28,044.24 × 8,829.19
  4. Step 4: Simplify right side
    18,686.89x = 247,607,923.37
  5. Step 5: Solve for x
    x = 247,607,923.37/18,686.89
  6. Step 6: Final answer
    x = 13,250.35

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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.