Home / 18,869.23-28,307.85-6,388.66

Finding the Fourth Proportional to 18,869.23, 28,307.85 and 6,388.66

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Solution

The fourth proportional to 18,869.23, 28,307.85 and 6,388.66 is: 9,584.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,869.23 : 28,307.85 = 6,388.66 : x
  2. Step 2: Convert to fraction form
    18,869.23/28,307.85 = 6,388.66/x
  3. Step 3: Cross multiply
    18,869.23x = 28,307.85 × 6,388.66
  4. Step 4: Simplify right side
    18,869.23x = 180,849,228.98
  5. Step 5: Solve for x
    x = 180,849,228.98/18,869.23
  6. Step 6: Final answer
    x = 9,584.35

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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.