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Finding the Fourth Proportional to 28,991.36, 43,492.44 and 9,274.88

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Solution

The fourth proportional to 28,991.36, 43,492.44 and 9,274.88 is: 13,914.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,991.36 : 43,492.44 = 9,274.88 : x
  2. Step 2: Convert to fraction form
    28,991.36/43,492.44 = 9,274.88/x
  3. Step 3: Cross multiply
    28,991.36x = 43,492.44 × 9,274.88
  4. Step 4: Simplify right side
    28,991.36x = 403,387,161.91
  5. Step 5: Solve for x
    x = 403,387,161.91/28,991.36
  6. Step 6: Final answer
    x = 13,914.05

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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.