Home / 21,311.04-31,968.18-10,930.08

Finding the Fourth Proportional to 21,311.04, 31,968.18 and 10,930.08

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Solution

The fourth proportional to 21,311.04, 31,968.18 and 10,930.08 is: 16,395.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,311.04 : 31,968.18 = 10,930.08 : x
  2. Step 2: Convert to fraction form
    21,311.04/31,968.18 = 10,930.08/x
  3. Step 3: Cross multiply
    21,311.04x = 31,968.18 × 10,930.08
  4. Step 4: Simplify right side
    21,311.04x = 349,414,764.85
  5. Step 5: Solve for x
    x = 349,414,764.85/21,311.04
  6. Step 6: Final answer
    x = 16,395.95

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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.