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Finding the Fourth Proportional to 9,991.53, 14,969.88 and 6,485.04

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Solution

The fourth proportional to 9,991.53, 14,969.88 and 6,485.04 is: 9,716.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,991.53 : 14,969.88 = 6,485.04 : x
  2. Step 2: Convert to fraction form
    9,991.53/14,969.88 = 6,485.04/x
  3. Step 3: Cross multiply
    9,991.53x = 14,969.88 × 6,485.04
  4. Step 4: Simplify right side
    9,991.53x = 97,080,270.60
  5. Step 5: Solve for x
    x = 97,080,270.60/9,991.53
  6. Step 6: Final answer
    x = 9,716.26

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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.