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Finding the Fourth Proportional to 21,203.44, 31,805.16 and 8,052.72

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Solution

The fourth proportional to 21,203.44, 31,805.16 and 8,052.72 is: 12,079.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,203.44 : 31,805.16 = 8,052.72 : x
  2. Step 2: Convert to fraction form
    21,203.44/31,805.16 = 8,052.72/x
  3. Step 3: Cross multiply
    21,203.44x = 31,805.16 × 8,052.72
  4. Step 4: Simplify right side
    21,203.44x = 256,118,048.04
  5. Step 5: Solve for x
    x = 256,118,048.04/21,203.44
  6. Step 6: Final answer
    x = 12,079.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.