Home / 20,877.18-31,294.64-8,394.82

Finding the Fourth Proportional to 20,877.18, 31,294.64 and 8,394.82

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Solution

The fourth proportional to 20,877.18, 31,294.64 and 8,394.82 is: 12,583.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,877.18 : 31,294.64 = 8,394.82 : x
  2. Step 2: Convert to fraction form
    20,877.18/31,294.64 = 8,394.82/x
  3. Step 3: Cross multiply
    20,877.18x = 31,294.64 × 8,394.82
  4. Step 4: Simplify right side
    20,877.18x = 262,712,869.76
  5. Step 5: Solve for x
    x = 262,712,869.76/20,877.18
  6. Step 6: Final answer
    x = 12,583.73

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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.