Home / 20,854.04-31,285.91-6,814.71

Finding the Fourth Proportional to 20,854.04, 31,285.91 and 6,814.71

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Solution

The fourth proportional to 20,854.04, 31,285.91 and 6,814.71 is: 10,223.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,854.04 : 31,285.91 = 6,814.71 : x
  2. Step 2: Convert to fraction form
    20,854.04/31,285.91 = 6,814.71/x
  3. Step 3: Cross multiply
    20,854.04x = 31,285.91 × 6,814.71
  4. Step 4: Simplify right side
    20,854.04x = 213,204,420.77
  5. Step 5: Solve for x
    x = 213,204,420.77/20,854.04
  6. Step 6: Final answer
    x = 10,223.65

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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.