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Finding the Fourth Proportional to 18,570.60, 27,721.04 and 17,200.08

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Solution

The fourth proportional to 18,570.60, 27,721.04 and 17,200.08 is: 25,675.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,570.60 : 27,721.04 = 17,200.08 : x
  2. Step 2: Convert to fraction form
    18,570.60/27,721.04 = 17,200.08/x
  3. Step 3: Cross multiply
    18,570.60x = 27,721.04 × 17,200.08
  4. Step 4: Simplify right side
    18,570.60x = 476,804,019.68
  5. Step 5: Solve for x
    x = 476,804,019.68/18,570.60
  6. Step 6: Final answer
    x = 25,675.21

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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.