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Finding the Fourth Proportional to 18,574.80, 27,824.40 and 11,533.20

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Solution

The fourth proportional to 18,574.80, 27,824.40 and 11,533.20 is: 17,276.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,574.80 : 27,824.40 = 11,533.20 : x
  2. Step 2: Convert to fraction form
    18,574.80/27,824.40 = 11,533.20/x
  3. Step 3: Cross multiply
    18,574.80x = 27,824.40 × 11,533.20
  4. Step 4: Simplify right side
    18,574.80x = 320,904,370.08
  5. Step 5: Solve for x
    x = 320,904,370.08/18,574.80
  6. Step 6: Final answer
    x = 17,276.33

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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.