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Finding the Fourth Proportional to 9,912.40, 14,868.60 and 9,259.60

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Solution

The fourth proportional to 9,912.40, 14,868.60 and 9,259.60 is: 13,889.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,912.40 : 14,868.60 = 9,259.60 : x
  2. Step 2: Convert to fraction form
    9,912.40/14,868.60 = 9,259.60/x
  3. Step 3: Cross multiply
    9,912.40x = 14,868.60 × 9,259.60
  4. Step 4: Simplify right side
    9,912.40x = 137,677,288.56
  5. Step 5: Solve for x
    x = 137,677,288.56/9,912.40
  6. Step 6: Final answer
    x = 13,889.40

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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.