Home / 21,679.39-32,518.34-9,191.37

Finding the Fourth Proportional to 21,679.39, 32,518.34 and 9,191.37

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Solution

The fourth proportional to 21,679.39, 32,518.34 and 9,191.37 is: 13,786.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,679.39 : 32,518.34 = 9,191.37 : x
  2. Step 2: Convert to fraction form
    21,679.39/32,518.34 = 9,191.37/x
  3. Step 3: Cross multiply
    21,679.39x = 32,518.34 × 9,191.37
  4. Step 4: Simplify right side
    21,679.39x = 298,888,048.77
  5. Step 5: Solve for x
    x = 298,888,048.77/21,679.39
  6. Step 6: Final answer
    x = 13,786.74

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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.