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Finding the Fourth Proportional to 12,796.40, 19,210.80 and 11,924.30

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Solution

The fourth proportional to 12,796.40, 19,210.80 and 11,924.30 is: 17,901.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,796.40 : 19,210.80 = 11,924.30 : x
  2. Step 2: Convert to fraction form
    12,796.40/19,210.80 = 11,924.30/x
  3. Step 3: Cross multiply
    12,796.40x = 19,210.80 × 11,924.30
  4. Step 4: Simplify right side
    12,796.40x = 229,075,342.44
  5. Step 5: Solve for x
    x = 229,075,342.44/12,796.40
  6. Step 6: Final answer
    x = 17,901.55

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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.