Home / 18,813.47-28,054.37-18,644.83

Finding the Fourth Proportional to 18,813.47, 28,054.37 and 18,644.83

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Solution

The fourth proportional to 18,813.47, 28,054.37 and 18,644.83 is: 27,802.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,813.47 : 28,054.37 = 18,644.83 : x
  2. Step 2: Convert to fraction form
    18,813.47/28,054.37 = 18,644.83/x
  3. Step 3: Cross multiply
    18,813.47x = 28,054.37 × 18,644.83
  4. Step 4: Simplify right side
    18,813.47x = 523,068,935.88
  5. Step 5: Solve for x
    x = 523,068,935.88/18,813.47
  6. Step 6: Final answer
    x = 27,802.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.