Home / 21,250.70-29,329-13,297.58

Finding the Fourth Proportional to 21,250.70, 29,329 and 13,297.58

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Solution

The fourth proportional to 21,250.70, 29,329 and 13,297.58 is: 18,352.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,250.70 : 29,329 = 13,297.58 : x
  2. Step 2: Convert to fraction form
    21,250.70/29,329 = 13,297.58/x
  3. Step 3: Cross multiply
    21,250.70x = 29,329 × 13,297.58
  4. Step 4: Simplify right side
    21,250.70x = 390,004,723.82
  5. Step 5: Solve for x
    x = 390,004,723.82/21,250.70
  6. Step 6: Final answer
    x = 18,352.56

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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.