Home / 20,997.34-31,477.80-7,849.84

Finding the Fourth Proportional to 20,997.34, 31,477.80 and 7,849.84

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Solution

The fourth proportional to 20,997.34, 31,477.80 and 7,849.84 is: 11,767.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997.34 : 31,477.80 = 7,849.84 : x
  2. Step 2: Convert to fraction form
    20,997.34/31,477.80 = 7,849.84/x
  3. Step 3: Cross multiply
    20,997.34x = 31,477.80 × 7,849.84
  4. Step 4: Simplify right side
    20,997.34x = 247,095,693.55
  5. Step 5: Solve for x
    x = 247,095,693.55/20,997.34
  6. Step 6: Final answer
    x = 11,767.95

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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.