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Finding the Fourth Proportional to 18,348.72, 27,455.04 and 10,957.20

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Solution

The fourth proportional to 18,348.72, 27,455.04 and 10,957.20 is: 16,395.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,348.72 : 27,455.04 = 10,957.20 : x
  2. Step 2: Convert to fraction form
    18,348.72/27,455.04 = 10,957.20/x
  3. Step 3: Cross multiply
    18,348.72x = 27,455.04 × 10,957.20
  4. Step 4: Simplify right side
    18,348.72x = 300,830,364.29
  5. Step 5: Solve for x
    x = 300,830,364.29/18,348.72
  6. Step 6: Final answer
    x = 16,395.17

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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.