Home / 20,890.62-31,343.22-9,204.84

Finding the Fourth Proportional to 20,890.62, 31,343.22 and 9,204.84

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Solution

The fourth proportional to 20,890.62, 31,343.22 and 9,204.84 is: 13,810.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,890.62 : 31,343.22 = 9,204.84 : x
  2. Step 2: Convert to fraction form
    20,890.62/31,343.22 = 9,204.84/x
  3. Step 3: Cross multiply
    20,890.62x = 31,343.22 × 9,204.84
  4. Step 4: Simplify right side
    20,890.62x = 288,509,325.18
  5. Step 5: Solve for x
    x = 288,509,325.18/20,890.62
  6. Step 6: Final answer
    x = 13,810.47

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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.