Home / 20,963.10-28,928.94-12,010.56

Finding the Fourth Proportional to 20,963.10, 28,928.94 and 12,010.56

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Solution

The fourth proportional to 20,963.10, 28,928.94 and 12,010.56 is: 16,574.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,963.10 : 28,928.94 = 12,010.56 : x
  2. Step 2: Convert to fraction form
    20,963.10/28,928.94 = 12,010.56/x
  3. Step 3: Cross multiply
    20,963.10x = 28,928.94 × 12,010.56
  4. Step 4: Simplify right side
    20,963.10x = 347,452,769.61
  5. Step 5: Solve for x
    x = 347,452,769.61/20,963.10
  6. Step 6: Final answer
    x = 16,574.49

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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.