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Finding the Fourth Proportional to 16,667.86, 25,001.78 and 6,805.40

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Solution

The fourth proportional to 16,667.86, 25,001.78 and 6,805.40 is: 10,208.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,667.86 : 25,001.78 = 6,805.40 : x
  2. Step 2: Convert to fraction form
    16,667.86/25,001.78 = 6,805.40/x
  3. Step 3: Cross multiply
    16,667.86x = 25,001.78 × 6,805.40
  4. Step 4: Simplify right side
    16,667.86x = 170,147,113.61
  5. Step 5: Solve for x
    x = 170,147,113.61/16,667.86
  6. Step 6: Final answer
    x = 10,208.10

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1.5x scale

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.