Home / 18,979.04-28,477.48-11,957.44

Finding the Fourth Proportional to 18,979.04, 28,477.48 and 11,957.44

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Solution

The fourth proportional to 18,979.04, 28,477.48 and 11,957.44 is: 17,941.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979.04 : 28,477.48 = 11,957.44 : x
  2. Step 2: Convert to fraction form
    18,979.04/28,477.48 = 11,957.44/x
  3. Step 3: Cross multiply
    18,979.04x = 28,477.48 × 11,957.44
  4. Step 4: Simplify right side
    18,979.04x = 340,517,758.45
  5. Step 5: Solve for x
    x = 340,517,758.45/18,979.04
  6. Step 6: Final answer
    x = 17,941.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.