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Finding the Fourth Proportional to 18,854.10, 28,287.30 and 8,992.10

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Solution

The fourth proportional to 18,854.10, 28,287.30 and 8,992.10 is: 13,491.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,854.10 : 28,287.30 = 8,992.10 : x
  2. Step 2: Convert to fraction form
    18,854.10/28,287.30 = 8,992.10/x
  3. Step 3: Cross multiply
    18,854.10x = 28,287.30 × 8,992.10
  4. Step 4: Simplify right side
    18,854.10x = 254,362,150.36
  5. Step 5: Solve for x
    x = 254,362,150.36/18,854.10
  6. Step 6: Final answer
    x = 13,491.08

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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.