Home / 20,961.62-28,929.16-12,010.31

Finding the Fourth Proportional to 20,961.62, 28,929.16 and 12,010.31

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Solution

The fourth proportional to 20,961.62, 28,929.16 and 12,010.31 is: 16,575.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,961.62 : 28,929.16 = 12,010.31 : x
  2. Step 2: Convert to fraction form
    20,961.62/28,929.16 = 12,010.31/x
  3. Step 3: Cross multiply
    20,961.62x = 28,929.16 × 12,010.31
  4. Step 4: Simplify right side
    20,961.62x = 347,448,266.98
  5. Step 5: Solve for x
    x = 347,448,266.98/20,961.62
  6. Step 6: Final answer
    x = 16,575.45

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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.