Home / 20,983.95-28,957.85-11,552.44

Finding the Fourth Proportional to 20,983.95, 28,957.85 and 11,552.44

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Solution

The fourth proportional to 20,983.95, 28,957.85 and 11,552.44 is: 15,942.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.95 : 28,957.85 = 11,552.44 : x
  2. Step 2: Convert to fraction form
    20,983.95/28,957.85 = 11,552.44/x
  3. Step 3: Cross multiply
    20,983.95x = 28,957.85 × 11,552.44
  4. Step 4: Simplify right side
    20,983.95x = 334,533,824.65
  5. Step 5: Solve for x
    x = 334,533,824.65/20,983.95
  6. Step 6: Final answer
    x = 15,942.37

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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.