Home / 12,805.78-19,192.26-9,877.94

Finding the Fourth Proportional to 12,805.78, 19,192.26 and 9,877.94

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Solution

The fourth proportional to 12,805.78, 19,192.26 and 9,877.94 is: 14,804.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,805.78 : 19,192.26 = 9,877.94 : x
  2. Step 2: Convert to fraction form
    12,805.78/19,192.26 = 9,877.94/x
  3. Step 3: Cross multiply
    12,805.78x = 19,192.26 × 9,877.94
  4. Step 4: Simplify right side
    12,805.78x = 189,579,992.74
  5. Step 5: Solve for x
    x = 189,579,992.74/12,805.78
  6. Step 6: Final answer
    x = 14,804.25

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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.