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Finding the Fourth Proportional to 13,763.35, 18,990.16 and 8,098.35

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Solution

The fourth proportional to 13,763.35, 18,990.16 and 8,098.35 is: 11,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,763.35 : 18,990.16 = 8,098.35 : x
  2. Step 2: Convert to fraction form
    13,763.35/18,990.16 = 8,098.35/x
  3. Step 3: Cross multiply
    13,763.35x = 18,990.16 × 8,098.35
  4. Step 4: Simplify right side
    13,763.35x = 153,788,870.78
  5. Step 5: Solve for x
    x = 153,788,870.78/13,763.35
  6. Step 6: Final answer
    x = 11,173.80

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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.