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Finding the Fourth Proportional to 14,522.88, 20,040.16 and 8,235.20

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Solution

The fourth proportional to 14,522.88, 20,040.16 and 8,235.20 is: 11,363.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,522.88 : 20,040.16 = 8,235.20 : x
  2. Step 2: Convert to fraction form
    14,522.88/20,040.16 = 8,235.20/x
  3. Step 3: Cross multiply
    14,522.88x = 20,040.16 × 8,235.20
  4. Step 4: Simplify right side
    14,522.88x = 165,034,725.63
  5. Step 5: Solve for x
    x = 165,034,725.63/14,522.88
  6. Step 6: Final answer
    x = 11,363.77

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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.