Home / 21,440.36-32,191.23-13,136.87

Finding the Fourth Proportional to 21,440.36, 32,191.23 and 13,136.87

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Solution

The fourth proportional to 21,440.36, 32,191.23 and 13,136.87 is: 19,724.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,440.36 : 32,191.23 = 13,136.87 : x
  2. Step 2: Convert to fraction form
    21,440.36/32,191.23 = 13,136.87/x
  3. Step 3: Cross multiply
    21,440.36x = 32,191.23 × 13,136.87
  4. Step 4: Simplify right side
    21,440.36x = 422,892,003.65
  5. Step 5: Solve for x
    x = 422,892,003.65/21,440.36
  6. Step 6: Final answer
    x = 19,724.11

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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.