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Finding the Fourth Proportional to 12,955.74, 19,417.20 and 8,273.94

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Solution

The fourth proportional to 12,955.74, 19,417.20 and 8,273.94 is: 12,400.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,955.74 : 19,417.20 = 8,273.94 : x
  2. Step 2: Convert to fraction form
    12,955.74/19,417.20 = 8,273.94/x
  3. Step 3: Cross multiply
    12,955.74x = 19,417.20 × 8,273.94
  4. Step 4: Simplify right side
    12,955.74x = 160,656,747.77
  5. Step 5: Solve for x
    x = 160,656,747.77/12,955.74
  6. Step 6: Final answer
    x = 12,400.43

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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.