Home / 21,641.03-29,865-12,694.98

Finding the Fourth Proportional to 21,641.03, 29,865 and 12,694.98

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Solution

The fourth proportional to 21,641.03, 29,865 and 12,694.98 is: 17,519.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,641.03 : 29,865 = 12,694.98 : x
  2. Step 2: Convert to fraction form
    21,641.03/29,865 = 12,694.98/x
  3. Step 3: Cross multiply
    21,641.03x = 29,865 × 12,694.98
  4. Step 4: Simplify right side
    21,641.03x = 379,135,577.70
  5. Step 5: Solve for x
    x = 379,135,577.70/21,641.03
  6. Step 6: Final answer
    x = 17,519.29

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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.