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Finding the Fourth Proportional to 28,713.64, 43,070.48 and 8,994

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Solution

The fourth proportional to 28,713.64, 43,070.48 and 8,994 is: 13,491.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,713.64 : 43,070.48 = 8,994 : x
  2. Step 2: Convert to fraction form
    28,713.64/43,070.48 = 8,994/x
  3. Step 3: Cross multiply
    28,713.64x = 43,070.48 × 8,994
  4. Step 4: Simplify right side
    28,713.64x = 387,375,897.12
  5. Step 5: Solve for x
    x = 387,375,897.12/28,713.64
  6. Step 6: Final answer
    x = 13,491.01

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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.