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Finding the Fourth Proportional to 12,955.44, 19,434.98 and 6,381.69

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Solution

The fourth proportional to 12,955.44, 19,434.98 and 6,381.69 is: 9,573.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,955.44 : 19,434.98 = 6,381.69 : x
  2. Step 2: Convert to fraction form
    12,955.44/19,434.98 = 6,381.69/x
  3. Step 3: Cross multiply
    12,955.44x = 19,434.98 × 6,381.69
  4. Step 4: Simplify right side
    12,955.44x = 124,028,017.52
  5. Step 5: Solve for x
    x = 124,028,017.52/12,955.44
  6. Step 6: Final answer
    x = 9,573.43

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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.