Home / 20,987.73-28,963.04-12,037.64

Finding the Fourth Proportional to 20,987.73, 28,963.04 and 12,037.64

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Solution

The fourth proportional to 20,987.73, 28,963.04 and 12,037.64 is: 16,611.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,987.73 : 28,963.04 = 12,037.64 : x
  2. Step 2: Convert to fraction form
    20,987.73/28,963.04 = 12,037.64/x
  3. Step 3: Cross multiply
    20,987.73x = 28,963.04 × 12,037.64
  4. Step 4: Simplify right side
    20,987.73x = 348,646,443.82
  5. Step 5: Solve for x
    x = 348,646,443.82/20,987.73
  6. Step 6: Final answer
    x = 16,611.92

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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.