Home / 20,957.18-28,919.73-12,005.26

Finding the Fourth Proportional to 20,957.18, 28,919.73 and 12,005.26

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Solution

The fourth proportional to 20,957.18, 28,919.73 and 12,005.26 is: 16,566.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,957.18 : 28,919.73 = 12,005.26 : x
  2. Step 2: Convert to fraction form
    20,957.18/28,919.73 = 12,005.26/x
  3. Step 3: Cross multiply
    20,957.18x = 28,919.73 × 12,005.26
  4. Step 4: Simplify right side
    20,957.18x = 347,188,805.48
  5. Step 5: Solve for x
    x = 347,188,805.48/20,957.18
  6. Step 6: Final answer
    x = 16,566.58

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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.