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Finding the Fourth Proportional to 9,901.01, 13,647.12 and 7,908.05

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Solution

The fourth proportional to 9,901.01, 13,647.12 and 7,908.05 is: 10,900.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,901.01 : 13,647.12 = 7,908.05 : x
  2. Step 2: Convert to fraction form
    9,901.01/13,647.12 = 7,908.05/x
  3. Step 3: Cross multiply
    9,901.01x = 13,647.12 × 7,908.05
  4. Step 4: Simplify right side
    9,901.01x = 107,922,107.32
  5. Step 5: Solve for x
    x = 107,922,107.32/9,901.01
  6. Step 6: Final answer
    x = 10,900.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.