Home / 21,020.68-29,005.38-12,068.56

Finding the Fourth Proportional to 21,020.68, 29,005.38 and 12,068.56

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Solution

The fourth proportional to 21,020.68, 29,005.38 and 12,068.56 is: 16,652.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.68 : 29,005.38 = 12,068.56 : x
  2. Step 2: Convert to fraction form
    21,020.68/29,005.38 = 12,068.56/x
  3. Step 3: Cross multiply
    21,020.68x = 29,005.38 × 12,068.56
  4. Step 4: Simplify right side
    21,020.68x = 350,053,168.85
  5. Step 5: Solve for x
    x = 350,053,168.85/21,020.68
  6. Step 6: Final answer
    x = 16,652.80

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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.