Home / 20,953.04-31,422.83-6,909.91

Finding the Fourth Proportional to 20,953.04, 31,422.83 and 6,909.91

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Solution

The fourth proportional to 20,953.04, 31,422.83 and 6,909.91 is: 10,362.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,953.04 : 31,422.83 = 6,909.91 : x
  2. Step 2: Convert to fraction form
    20,953.04/31,422.83 = 6,909.91/x
  3. Step 3: Cross multiply
    20,953.04x = 31,422.83 × 6,909.91
  4. Step 4: Simplify right side
    20,953.04x = 217,128,770.13
  5. Step 5: Solve for x
    x = 217,128,770.13/20,953.04
  6. Step 6: Final answer
    x = 10,362.64

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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.