Home / 12,712.78-19,075.82-9,231.55

Finding the Fourth Proportional to 12,712.78, 19,075.82 and 9,231.55

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Solution

The fourth proportional to 12,712.78, 19,075.82 and 9,231.55 is: 13,852.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,712.78 : 19,075.82 = 9,231.55 : x
  2. Step 2: Convert to fraction form
    12,712.78/19,075.82 = 9,231.55/x
  3. Step 3: Cross multiply
    12,712.78x = 19,075.82 × 9,231.55
  4. Step 4: Simplify right side
    12,712.78x = 176,099,451.50
  5. Step 5: Solve for x
    x = 176,099,451.50/12,712.78
  6. Step 6: Final answer
    x = 13,852.16

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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.