Home / 19,690.21-29,502.51-14,135.23

Finding the Fourth Proportional to 19,690.21, 29,502.51 and 14,135.23

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Solution

The fourth proportional to 19,690.21, 29,502.51 and 14,135.23 is: 21,179.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,690.21 : 29,502.51 = 14,135.23 : x
  2. Step 2: Convert to fraction form
    19,690.21/29,502.51 = 14,135.23/x
  3. Step 3: Cross multiply
    19,690.21x = 29,502.51 × 14,135.23
  4. Step 4: Simplify right side
    19,690.21x = 417,024,764.43
  5. Step 5: Solve for x
    x = 417,024,764.43/19,690.21
  6. Step 6: Final answer
    x = 21,179.29

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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.