Home / 21,031.02-29,020.68-12,076.38

Finding the Fourth Proportional to 21,031.02, 29,020.68 and 12,076.38

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Solution

The fourth proportional to 21,031.02, 29,020.68 and 12,076.38 is: 16,664.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,031.02 : 29,020.68 = 12,076.38 : x
  2. Step 2: Convert to fraction form
    21,031.02/29,020.68 = 12,076.38/x
  3. Step 3: Cross multiply
    21,031.02x = 29,020.68 × 12,076.38
  4. Step 4: Simplify right side
    21,031.02x = 350,464,759.54
  5. Step 5: Solve for x
    x = 350,464,759.54/21,031.02
  6. Step 6: Final answer
    x = 16,664.18

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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.