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Finding the Fourth Proportional to 9,338.21, 13,903.64 and 9,207.45

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Solution

The fourth proportional to 9,338.21, 13,903.64 and 9,207.45 is: 13,708.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,338.21 : 13,903.64 = 9,207.45 : x
  2. Step 2: Convert to fraction form
    9,338.21/13,903.64 = 9,207.45/x
  3. Step 3: Cross multiply
    9,338.21x = 13,903.64 × 9,207.45
  4. Step 4: Simplify right side
    9,338.21x = 128,017,070.12
  5. Step 5: Solve for x
    x = 128,017,070.12/9,338.21
  6. Step 6: Final answer
    x = 13,708.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.