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Finding the Fourth Proportional to 43,809.97, 65,713.99 and 12,219.19

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Solution

The fourth proportional to 43,809.97, 65,713.99 and 12,219.19 is: 18,328.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,809.97 : 65,713.99 = 12,219.19 : x
  2. Step 2: Convert to fraction form
    43,809.97/65,713.99 = 12,219.19/x
  3. Step 3: Cross multiply
    43,809.97x = 65,713.99 × 12,219.19
  4. Step 4: Simplify right side
    43,809.97x = 802,971,729.47
  5. Step 5: Solve for x
    x = 802,971,729.47/43,809.97
  6. Step 6: Final answer
    x = 18,328.52

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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.