Home / 20,656.94-30,979.87-8,967.38

Finding the Fourth Proportional to 20,656.94, 30,979.87 and 8,967.38

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Solution

The fourth proportional to 20,656.94, 30,979.87 and 8,967.38 is: 13,448.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.94 : 30,979.87 = 8,967.38 : x
  2. Step 2: Convert to fraction form
    20,656.94/30,979.87 = 8,967.38/x
  3. Step 3: Cross multiply
    20,656.94x = 30,979.87 × 8,967.38
  4. Step 4: Simplify right side
    20,656.94x = 277,808,089.32
  5. Step 5: Solve for x
    x = 277,808,089.32/20,656.94
  6. Step 6: Final answer
    x = 13,448.66

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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.