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Finding the Fourth Proportional to 16,929, 25,409.70 and 7,065.63

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Solution

The fourth proportional to 16,929, 25,409.70 and 7,065.63 is: 10,605.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,929 : 25,409.70 = 7,065.63 : x
  2. Step 2: Convert to fraction form
    16,929/25,409.70 = 7,065.63/x
  3. Step 3: Cross multiply
    16,929x = 25,409.70 × 7,065.63
  4. Step 4: Simplify right side
    16,929x = 179,535,538.61
  5. Step 5: Solve for x
    x = 179,535,538.61/16,929
  6. Step 6: Final answer
    x = 10,605.21

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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.