Home / 20,603.00-28,432.70-11,651.85

Finding the Fourth Proportional to 20,603.00, 28,432.70 and 11,651.85

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Solution

The fourth proportional to 20,603.00, 28,432.70 and 11,651.85 is: 16,079.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,603.00 : 28,432.70 = 11,651.85 : x
  2. Step 2: Convert to fraction form
    20,603.00/28,432.70 = 11,651.85/x
  3. Step 3: Cross multiply
    20,603.00x = 28,432.70 × 11,651.85
  4. Step 4: Simplify right side
    20,603.00x = 331,293,442.46
  5. Step 5: Solve for x
    x = 331,293,442.46/20,603.00
  6. Step 6: Final answer
    x = 16,079.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.