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Finding the Fourth Proportional to 18,573.77, 27,860.34 and 7,480.18

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Solution

The fourth proportional to 18,573.77, 27,860.34 and 7,480.18 is: 11,220.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,573.77 : 27,860.34 = 7,480.18 : x
  2. Step 2: Convert to fraction form
    18,573.77/27,860.34 = 7,480.18/x
  3. Step 3: Cross multiply
    18,573.77x = 27,860.34 × 7,480.18
  4. Step 4: Simplify right side
    18,573.77x = 208,400,181.36
  5. Step 5: Solve for x
    x = 208,400,181.36/18,573.77
  6. Step 6: Final answer
    x = 11,220.14

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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.