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Finding the Fourth Proportional to 9,961.48, 14,901.90 and 8,321.32

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Solution

The fourth proportional to 9,961.48, 14,901.90 and 8,321.32 is: 12,448.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,961.48 : 14,901.90 = 8,321.32 : x
  2. Step 2: Convert to fraction form
    9,961.48/14,901.90 = 8,321.32/x
  3. Step 3: Cross multiply
    9,961.48x = 14,901.90 × 8,321.32
  4. Step 4: Simplify right side
    9,961.48x = 124,003,478.51
  5. Step 5: Solve for x
    x = 124,003,478.51/9,961.48
  6. Step 6: Final answer
    x = 12,448.30

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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.