Home / 21,429.41-29,559.68-14,161.53

Finding the Fourth Proportional to 21,429.41, 29,559.68 and 14,161.53

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Solution

The fourth proportional to 21,429.41, 29,559.68 and 14,161.53 is: 19,534.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,429.41 : 29,559.68 = 14,161.53 : x
  2. Step 2: Convert to fraction form
    21,429.41/29,559.68 = 14,161.53/x
  3. Step 3: Cross multiply
    21,429.41x = 29,559.68 × 14,161.53
  4. Step 4: Simplify right side
    21,429.41x = 418,610,467.92
  5. Step 5: Solve for x
    x = 418,610,467.92/21,429.41
  6. Step 6: Final answer
    x = 19,534.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.