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Finding the Fourth Proportional to 18,461.80, 27,673.80 and 9,087.40

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Solution

The fourth proportional to 18,461.80, 27,673.80 and 9,087.40 is: 13,621.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,461.80 : 27,673.80 = 9,087.40 : x
  2. Step 2: Convert to fraction form
    18,461.80/27,673.80 = 9,087.40/x
  3. Step 3: Cross multiply
    18,461.80x = 27,673.80 × 9,087.40
  4. Step 4: Simplify right side
    18,461.80x = 251,482,890.12
  5. Step 5: Solve for x
    x = 251,482,890.12/18,461.80
  6. Step 6: Final answer
    x = 13,621.80

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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.