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Finding the Fourth Proportional to 21,034.08, 29,018.88 and 12,080.16

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Solution

The fourth proportional to 21,034.08, 29,018.88 and 12,080.16 is: 16,665.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,034.08 : 29,018.88 = 12,080.16 : x
  2. Step 2: Convert to fraction form
    21,034.08/29,018.88 = 12,080.16/x
  3. Step 3: Cross multiply
    21,034.08x = 29,018.88 × 12,080.16
  4. Step 4: Simplify right side
    21,034.08x = 350,552,713.42
  5. Step 5: Solve for x
    x = 350,552,713.42/21,034.08
  6. Step 6: Final answer
    x = 16,665.94

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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.