Home / 20,933.06-31,392.88-6,889.82

Finding the Fourth Proportional to 20,933.06, 31,392.88 and 6,889.82

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Solution

The fourth proportional to 20,933.06, 31,392.88 and 6,889.82 is: 10,332.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,933.06 : 31,392.88 = 6,889.82 : x
  2. Step 2: Convert to fraction form
    20,933.06/31,392.88 = 6,889.82/x
  3. Step 3: Cross multiply
    20,933.06x = 31,392.88 × 6,889.82
  4. Step 4: Simplify right side
    20,933.06x = 216,291,118.29
  5. Step 5: Solve for x
    x = 216,291,118.29/20,933.06
  6. Step 6: Final answer
    x = 10,332.52

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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.