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Finding the Fourth Proportional to 43,697.65, 65,546.52 and 18,721.50

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Solution

The fourth proportional to 43,697.65, 65,546.52 and 18,721.50 is: 28,082.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,697.65 : 65,546.52 = 18,721.50 : x
  2. Step 2: Convert to fraction form
    43,697.65/65,546.52 = 18,721.50/x
  3. Step 3: Cross multiply
    43,697.65x = 65,546.52 × 18,721.50
  4. Step 4: Simplify right side
    43,697.65x = 1,227,129,411.22
  5. Step 5: Solve for x
    x = 1,227,129,411.22/43,697.65
  6. Step 6: Final answer
    x = 28,082.27

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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.