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Finding the Fourth Proportional to 9,620.40, 14,401.80 and 9,050.80

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Solution

The fourth proportional to 9,620.40, 14,401.80 and 9,050.80 is: 13,549.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,620.40 : 14,401.80 = 9,050.80 : x
  2. Step 2: Convert to fraction form
    9,620.40/14,401.80 = 9,050.80/x
  3. Step 3: Cross multiply
    9,620.40x = 14,401.80 × 9,050.80
  4. Step 4: Simplify right side
    9,620.40x = 130,347,811.44
  5. Step 5: Solve for x
    x = 130,347,811.44/9,620.40
  6. Step 6: Final answer
    x = 13,549.11

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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.