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Finding the Fourth Proportional to 18,284.10, 27,426.15 and 7,187.10

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Solution

The fourth proportional to 18,284.10, 27,426.15 and 7,187.10 is: 10,780.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,284.10 : 27,426.15 = 7,187.10 : x
  2. Step 2: Convert to fraction form
    18,284.10/27,426.15 = 7,187.10/x
  3. Step 3: Cross multiply
    18,284.10x = 27,426.15 × 7,187.10
  4. Step 4: Simplify right side
    18,284.10x = 197,114,482.67
  5. Step 5: Solve for x
    x = 197,114,482.67/18,284.10
  6. Step 6: Final answer
    x = 10,780.65

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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.