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Finding the Fourth Proportional to 9,205.80, 13,808.70 and 7,018.80

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Solution

The fourth proportional to 9,205.80, 13,808.70 and 7,018.80 is: 10,528.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,205.80 : 13,808.70 = 7,018.80 : x
  2. Step 2: Convert to fraction form
    9,205.80/13,808.70 = 7,018.80/x
  3. Step 3: Cross multiply
    9,205.80x = 13,808.70 × 7,018.80
  4. Step 4: Simplify right side
    9,205.80x = 96,920,503.56
  5. Step 5: Solve for x
    x = 96,920,503.56/9,205.80
  6. Step 6: Final answer
    x = 10,528.20

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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.