Home / 20,953.18-31,436.32-6,923.06

Finding the Fourth Proportional to 20,953.18, 31,436.32 and 6,923.06

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Solution

The fourth proportional to 20,953.18, 31,436.32 and 6,923.06 is: 10,386.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,953.18 : 31,436.32 = 6,923.06 : x
  2. Step 2: Convert to fraction form
    20,953.18/31,436.32 = 6,923.06/x
  3. Step 3: Cross multiply
    20,953.18x = 31,436.32 × 6,923.06
  4. Step 4: Simplify right side
    20,953.18x = 217,635,511.88
  5. Step 5: Solve for x
    x = 217,635,511.88/20,953.18
  6. Step 6: Final answer
    x = 10,386.76

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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.