Home / 12,905.64-19,364.40-9,399.12

Finding the Fourth Proportional to 12,905.64, 19,364.40 and 9,399.12

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Solution

The fourth proportional to 12,905.64, 19,364.40 and 9,399.12 is: 14,103.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905.64 : 19,364.40 = 9,399.12 : x
  2. Step 2: Convert to fraction form
    12,905.64/19,364.40 = 9,399.12/x
  3. Step 3: Cross multiply
    12,905.64x = 19,364.40 × 9,399.12
  4. Step 4: Simplify right side
    12,905.64x = 182,008,319.33
  5. Step 5: Solve for x
    x = 182,008,319.33/12,905.64
  6. Step 6: Final answer
    x = 14,103.01

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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.