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Finding the Fourth Proportional to 18,301.80, 27,485.10 and 14,151.90

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Solution

The fourth proportional to 18,301.80, 27,485.10 and 14,151.90 is: 21,252.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,301.80 : 27,485.10 = 14,151.90 : x
  2. Step 2: Convert to fraction form
    18,301.80/27,485.10 = 14,151.90/x
  3. Step 3: Cross multiply
    18,301.80x = 27,485.10 × 14,151.90
  4. Step 4: Simplify right side
    18,301.80x = 388,966,386.69
  5. Step 5: Solve for x
    x = 388,966,386.69/18,301.80
  6. Step 6: Final answer
    x = 21,252.90

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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.