Home / 20,980.51-31,463.26-6,937.94

Finding the Fourth Proportional to 20,980.51, 31,463.26 and 6,937.94

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Solution

The fourth proportional to 20,980.51, 31,463.26 and 6,937.94 is: 10,404.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,980.51 : 31,463.26 = 6,937.94 : x
  2. Step 2: Convert to fraction form
    20,980.51/31,463.26 = 6,937.94/x
  3. Step 3: Cross multiply
    20,980.51x = 31,463.26 × 6,937.94
  4. Step 4: Simplify right side
    20,980.51x = 218,290,271.40
  5. Step 5: Solve for x
    x = 218,290,271.40/20,980.51
  6. Step 6: Final answer
    x = 10,404.43

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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.