Home / 20,823.65-31,235.45-6,783.66

Finding the Fourth Proportional to 20,823.65, 31,235.45 and 6,783.66

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Solution

The fourth proportional to 20,823.65, 31,235.45 and 6,783.66 is: 10,175.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,823.65 : 31,235.45 = 6,783.66 : x
  2. Step 2: Convert to fraction form
    20,823.65/31,235.45 = 6,783.66/x
  3. Step 3: Cross multiply
    20,823.65x = 31,235.45 × 6,783.66
  4. Step 4: Simplify right side
    20,823.65x = 211,890,620.10
  5. Step 5: Solve for x
    x = 211,890,620.10/20,823.65
  6. Step 6: Final answer
    x = 10,175.48

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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.