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Finding the Fourth Proportional to 17,619.81, 24,314.82 and 9,661.91

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Solution

The fourth proportional to 17,619.81, 24,314.82 and 9,661.91 is: 13,333.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,619.81 : 24,314.82 = 9,661.91 : x
  2. Step 2: Convert to fraction form
    17,619.81/24,314.82 = 9,661.91/x
  3. Step 3: Cross multiply
    17,619.81x = 24,314.82 × 9,661.91
  4. Step 4: Simplify right side
    17,619.81x = 234,927,480.93
  5. Step 5: Solve for x
    x = 234,927,480.93/17,619.81
  6. Step 6: Final answer
    x = 13,333.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.