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Finding the Fourth Proportional to 14,486.88, 19,990.46 and 8,520.02

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Solution

The fourth proportional to 14,486.88, 19,990.46 and 8,520.02 is: 11,756.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,486.88 : 19,990.46 = 8,520.02 : x
  2. Step 2: Convert to fraction form
    14,486.88/19,990.46 = 8,520.02/x
  3. Step 3: Cross multiply
    14,486.88x = 19,990.46 × 8,520.02
  4. Step 4: Simplify right side
    14,486.88x = 170,318,976.46
  5. Step 5: Solve for x
    x = 170,318,976.46/14,486.88
  6. Step 6: Final answer
    x = 11,756.77

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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.