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Finding the Fourth Proportional to 9,051.36, 13,638.69 and 7,443.90

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Solution

The fourth proportional to 9,051.36, 13,638.69 and 7,443.90 is: 11,216.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,051.36 : 13,638.69 = 7,443.90 : x
  2. Step 2: Convert to fraction form
    9,051.36/13,638.69 = 7,443.90/x
  3. Step 3: Cross multiply
    9,051.36x = 13,638.69 × 7,443.90
  4. Step 4: Simplify right side
    9,051.36x = 101,525,044.49
  5. Step 5: Solve for x
    x = 101,525,044.49/9,051.36
  6. Step 6: Final answer
    x = 11,216.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.