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Finding the Fourth Proportional to 18,869.29, 28,303.83 and 4,829.29

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Solution

The fourth proportional to 18,869.29, 28,303.83 and 4,829.29 is: 7,243.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,869.29 : 28,303.83 = 4,829.29 : x
  2. Step 2: Convert to fraction form
    18,869.29/28,303.83 = 4,829.29/x
  3. Step 3: Cross multiply
    18,869.29x = 28,303.83 × 4,829.29
  4. Step 4: Simplify right side
    18,869.29x = 136,687,332.42
  5. Step 5: Solve for x
    x = 136,687,332.42/18,869.29
  6. Step 6: Final answer
    x = 7,243.91

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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.