Home / 21,379.68-32,081.67-11,518.74

Finding the Fourth Proportional to 21,379.68, 32,081.67 and 11,518.74

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Solution

The fourth proportional to 21,379.68, 32,081.67 and 11,518.74 is: 17,284.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,379.68 : 32,081.67 = 11,518.74 : x
  2. Step 2: Convert to fraction form
    21,379.68/32,081.67 = 11,518.74/x
  3. Step 3: Cross multiply
    21,379.68x = 32,081.67 × 11,518.74
  4. Step 4: Simplify right side
    21,379.68x = 369,540,415.50
  5. Step 5: Solve for x
    x = 369,540,415.50/21,379.68
  6. Step 6: Final answer
    x = 17,284.66

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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.