Home / 19,664.19-29,491.11-13,423.05

Finding the Fourth Proportional to 19,664.19, 29,491.11 and 13,423.05

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Solution

The fourth proportional to 19,664.19, 29,491.11 and 13,423.05 is: 20,131.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,664.19 : 29,491.11 = 13,423.05 : x
  2. Step 2: Convert to fraction form
    19,664.19/29,491.11 = 13,423.05/x
  3. Step 3: Cross multiply
    19,664.19x = 29,491.11 × 13,423.05
  4. Step 4: Simplify right side
    19,664.19x = 395,860,644.09
  5. Step 5: Solve for x
    x = 395,860,644.09/19,664.19
  6. Step 6: Final answer
    x = 20,131.04

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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.