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Finding the Fourth Proportional to 9,915.76, 14,896.88 and 9,355.36

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Solution

The fourth proportional to 9,915.76, 14,896.88 and 9,355.36 is: 14,054.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,915.76 : 14,896.88 = 9,355.36 : x
  2. Step 2: Convert to fraction form
    9,915.76/14,896.88 = 9,355.36/x
  3. Step 3: Cross multiply
    9,915.76x = 14,896.88 × 9,355.36
  4. Step 4: Simplify right side
    9,915.76x = 139,365,675.28
  5. Step 5: Solve for x
    x = 139,365,675.28/9,915.76
  6. Step 6: Final answer
    x = 14,054.97

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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.