Home / 20,962.80-28,928.16-12,010.32

Finding the Fourth Proportional to 20,962.80, 28,928.16 and 12,010.32

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Solution

The fourth proportional to 20,962.80, 28,928.16 and 12,010.32 is: 16,573.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,962.80 : 28,928.16 = 12,010.32 : x
  2. Step 2: Convert to fraction form
    20,962.80/28,928.16 = 12,010.32/x
  3. Step 3: Cross multiply
    20,962.80x = 28,928.16 × 12,010.32
  4. Step 4: Simplify right side
    20,962.80x = 347,436,458.61
  5. Step 5: Solve for x
    x = 347,436,458.61/20,962.80
  6. Step 6: Final answer
    x = 16,573.95

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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.