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Finding the Fourth Proportional to 43,172.76, 64,754.76 and 13,589.76

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Solution

The fourth proportional to 43,172.76, 64,754.76 and 13,589.76 is: 20,383.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,172.76 : 64,754.76 = 13,589.76 : x
  2. Step 2: Convert to fraction form
    43,172.76/64,754.76 = 13,589.76/x
  3. Step 3: Cross multiply
    43,172.76x = 64,754.76 × 13,589.76
  4. Step 4: Simplify right side
    43,172.76x = 880,001,647.26
  5. Step 5: Solve for x
    x = 880,001,647.26/43,172.76
  6. Step 6: Final answer
    x = 20,383.26

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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.