Home / 20,656.08-28,509.52-12,270.96

Finding the Fourth Proportional to 20,656.08, 28,509.52 and 12,270.96

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Solution

The fourth proportional to 20,656.08, 28,509.52 and 12,270.96 is: 16,936.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.08 : 28,509.52 = 12,270.96 : x
  2. Step 2: Convert to fraction form
    20,656.08/28,509.52 = 12,270.96/x
  3. Step 3: Cross multiply
    20,656.08x = 28,509.52 × 12,270.96
  4. Step 4: Simplify right side
    20,656.08x = 349,839,179.54
  5. Step 5: Solve for x
    x = 349,839,179.54/20,656.08
  6. Step 6: Final answer
    x = 16,936.38

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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.