Home / 20,866.95-31,294.18-11,000.85

Finding the Fourth Proportional to 20,866.95, 31,294.18 and 11,000.85

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Solution

The fourth proportional to 20,866.95, 31,294.18 and 11,000.85 is: 16,497.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.95 : 31,294.18 = 11,000.85 : x
  2. Step 2: Convert to fraction form
    20,866.95/31,294.18 = 11,000.85/x
  3. Step 3: Cross multiply
    20,866.95x = 31,294.18 × 11,000.85
  4. Step 4: Simplify right side
    20,866.95x = 344,262,476.45
  5. Step 5: Solve for x
    x = 344,262,476.45/20,866.95
  6. Step 6: Final answer
    x = 16,497.98

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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.