Home / 12,954.78-19,415.61-8,272.98

Finding the Fourth Proportional to 12,954.78, 19,415.61 and 8,272.98

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Solution

The fourth proportional to 12,954.78, 19,415.61 and 8,272.98 is: 12,398.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,954.78 : 19,415.61 = 8,272.98 : x
  2. Step 2: Convert to fraction form
    12,954.78/19,415.61 = 8,272.98/x
  3. Step 3: Cross multiply
    12,954.78x = 19,415.61 × 8,272.98
  4. Step 4: Simplify right side
    12,954.78x = 160,624,953.22
  5. Step 5: Solve for x
    x = 160,624,953.22/12,954.78
  6. Step 6: Final answer
    x = 12,398.89

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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.