Home / 20,877.66-31,317.98-8,397.76

Finding the Fourth Proportional to 20,877.66, 31,317.98 and 8,397.76

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Solution

The fourth proportional to 20,877.66, 31,317.98 and 8,397.76 is: 12,597.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,877.66 : 31,317.98 = 8,397.76 : x
  2. Step 2: Convert to fraction form
    20,877.66/31,317.98 = 8,397.76/x
  3. Step 3: Cross multiply
    20,877.66x = 31,317.98 × 8,397.76
  4. Step 4: Simplify right side
    20,877.66x = 263,000,879.72
  5. Step 5: Solve for x
    x = 263,000,879.72/20,877.66
  6. Step 6: Final answer
    x = 12,597.24

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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.