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Finding the Fourth Proportional to 28,991.08, 43,485.54 and 8,214.04

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Solution

The fourth proportional to 28,991.08, 43,485.54 and 8,214.04 is: 12,320.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,991.08 : 43,485.54 = 8,214.04 : x
  2. Step 2: Convert to fraction form
    28,991.08/43,485.54 = 8,214.04/x
  3. Step 3: Cross multiply
    28,991.08x = 43,485.54 × 8,214.04
  4. Step 4: Simplify right side
    28,991.08x = 357,191,964.98
  5. Step 5: Solve for x
    x = 357,191,964.98/28,991.08
  6. Step 6: Final answer
    x = 12,320.75

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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.