Home / 12,936.02-19,390.21-7,377.39

Finding the Fourth Proportional to 12,936.02, 19,390.21 and 7,377.39

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Solution

The fourth proportional to 12,936.02, 19,390.21 and 7,377.39 is: 11,058.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,936.02 : 19,390.21 = 7,377.39 : x
  2. Step 2: Convert to fraction form
    12,936.02/19,390.21 = 7,377.39/x
  3. Step 3: Cross multiply
    12,936.02x = 19,390.21 × 7,377.39
  4. Step 4: Simplify right side
    12,936.02x = 143,049,156.37
  5. Step 5: Solve for x
    x = 143,049,156.37/12,936.02
  6. Step 6: Final answer
    x = 11,058.21

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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.