Home / 20,876.66-31,316.48-8,396.76

Finding the Fourth Proportional to 20,876.66, 31,316.48 and 8,396.76

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Solution

The fourth proportional to 20,876.66, 31,316.48 and 8,396.76 is: 12,595.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,876.66 : 31,316.48 = 8,396.76 : x
  2. Step 2: Convert to fraction form
    20,876.66/31,316.48 = 8,396.76/x
  3. Step 3: Cross multiply
    20,876.66x = 31,316.48 × 8,396.76
  4. Step 4: Simplify right side
    20,876.66x = 262,956,966.60
  5. Step 5: Solve for x
    x = 262,956,966.60/20,876.66
  6. Step 6: Final answer
    x = 12,595.74

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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.