Home / 21,835.72-32,767.92-11,981.92

Finding the Fourth Proportional to 21,835.72, 32,767.92 and 11,981.92

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Solution

The fourth proportional to 21,835.72, 32,767.92 and 11,981.92 is: 17,980.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,835.72 : 32,767.92 = 11,981.92 : x
  2. Step 2: Convert to fraction form
    21,835.72/32,767.92 = 11,981.92/x
  3. Step 3: Cross multiply
    21,835.72x = 32,767.92 × 11,981.92
  4. Step 4: Simplify right side
    21,835.72x = 392,622,596.01
  5. Step 5: Solve for x
    x = 392,622,596.01/21,835.72
  6. Step 6: Final answer
    x = 17,980.75

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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.