Home / 20,835.50-28,752.99-11,404.07

Finding the Fourth Proportional to 20,835.50, 28,752.99 and 11,404.07

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Solution

The fourth proportional to 20,835.50, 28,752.99 and 11,404.07 is: 15,737.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.50 : 28,752.99 = 11,404.07 : x
  2. Step 2: Convert to fraction form
    20,835.50/28,752.99 = 11,404.07/x
  3. Step 3: Cross multiply
    20,835.50x = 28,752.99 × 11,404.07
  4. Step 4: Simplify right side
    20,835.50x = 327,900,966.90
  5. Step 5: Solve for x
    x = 327,900,966.90/20,835.50
  6. Step 6: Final answer
    x = 15,737.61

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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.