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Finding the Fourth Proportional to 18,203.60, 27,305.40 and 15,287.60

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Solution

The fourth proportional to 18,203.60, 27,305.40 and 15,287.60 is: 22,931.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,203.60 : 27,305.40 = 15,287.60 : x
  2. Step 2: Convert to fraction form
    18,203.60/27,305.40 = 15,287.60/x
  3. Step 3: Cross multiply
    18,203.60x = 27,305.40 × 15,287.60
  4. Step 4: Simplify right side
    18,203.60x = 417,434,033.04
  5. Step 5: Solve for x
    x = 417,434,033.04/18,203.60
  6. Step 6: Final answer
    x = 22,931.40

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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.