Home / 20,966.20-28,918.24-12,010.43

Finding the Fourth Proportional to 20,966.20, 28,918.24 and 12,010.43

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Solution

The fourth proportional to 20,966.20, 28,918.24 and 12,010.43 is: 16,565.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.20 : 28,918.24 = 12,010.43 : x
  2. Step 2: Convert to fraction form
    20,966.20/28,918.24 = 12,010.43/x
  3. Step 3: Cross multiply
    20,966.20x = 28,918.24 × 12,010.43
  4. Step 4: Simplify right side
    20,966.20x = 347,320,539.51
  5. Step 5: Solve for x
    x = 347,320,539.51/20,966.20
  6. Step 6: Final answer
    x = 16,565.74

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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.