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Finding the Fourth Proportional to 43,624.16, 65,424.48 and 18,651.80

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Solution

The fourth proportional to 43,624.16, 65,424.48 and 18,651.80 is: 27,972.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,624.16 : 65,424.48 = 18,651.80 : x
  2. Step 2: Convert to fraction form
    43,624.16/65,424.48 = 18,651.80/x
  3. Step 3: Cross multiply
    43,624.16x = 65,424.48 × 18,651.80
  4. Step 4: Simplify right side
    43,624.16x = 1,220,284,316.06
  5. Step 5: Solve for x
    x = 1,220,284,316.06/43,624.16
  6. Step 6: Final answer
    x = 27,972.67

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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.