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Finding the Fourth Proportional to 16,669.72, 25,002.65 and 6,678.77

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Solution

The fourth proportional to 16,669.72, 25,002.65 and 6,678.77 is: 10,017.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,669.72 : 25,002.65 = 6,678.77 : x
  2. Step 2: Convert to fraction form
    16,669.72/25,002.65 = 6,678.77/x
  3. Step 3: Cross multiply
    16,669.72x = 25,002.65 × 6,678.77
  4. Step 4: Simplify right side
    16,669.72x = 166,986,948.74
  5. Step 5: Solve for x
    x = 166,986,948.74/16,669.72
  6. Step 6: Final answer
    x = 10,017.38

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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.