Home / 21,560.49-29,754.42-12,129.03

Finding the Fourth Proportional to 21,560.49, 29,754.42 and 12,129.03

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Solution

The fourth proportional to 21,560.49, 29,754.42 and 12,129.03 is: 16,738.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,560.49 : 29,754.42 = 12,129.03 : x
  2. Step 2: Convert to fraction form
    21,560.49/29,754.42 = 12,129.03/x
  3. Step 3: Cross multiply
    21,560.49x = 29,754.42 × 12,129.03
  4. Step 4: Simplify right side
    21,560.49x = 360,892,252.81
  5. Step 5: Solve for x
    x = 360,892,252.81/21,560.49
  6. Step 6: Final answer
    x = 16,738.59

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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.