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Finding the Fourth Proportional to 17,139.65, 25,688.95 and 8,823.65

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Solution

The fourth proportional to 17,139.65, 25,688.95 and 8,823.65 is: 13,224.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,139.65 : 25,688.95 = 8,823.65 : x
  2. Step 2: Convert to fraction form
    17,139.65/25,688.95 = 8,823.65/x
  3. Step 3: Cross multiply
    17,139.65x = 25,688.95 × 8,823.65
  4. Step 4: Simplify right side
    17,139.65x = 226,670,153.16
  5. Step 5: Solve for x
    x = 226,670,153.16/17,139.65
  6. Step 6: Final answer
    x = 13,224.90

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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.