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Finding the Fourth Proportional to 17,555.81, 24,235.81 and 11,920.37

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Solution

The fourth proportional to 17,555.81, 24,235.81 and 11,920.37 is: 16,456.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,555.81 : 24,235.81 = 11,920.37 : x
  2. Step 2: Convert to fraction form
    17,555.81/24,235.81 = 11,920.37/x
  3. Step 3: Cross multiply
    17,555.81x = 24,235.81 × 11,920.37
  4. Step 4: Simplify right side
    17,555.81x = 288,899,671.47
  5. Step 5: Solve for x
    x = 288,899,671.47/17,555.81
  6. Step 6: Final answer
    x = 16,456.08

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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.