Home / 12,788.31-19,185.09-5,392.77

Finding the Fourth Proportional to 12,788.31, 19,185.09 and 5,392.77

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Solution

The fourth proportional to 12,788.31, 19,185.09 and 5,392.77 is: 8,090.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,788.31 : 19,185.09 = 5,392.77 : x
  2. Step 2: Convert to fraction form
    12,788.31/19,185.09 = 5,392.77/x
  3. Step 3: Cross multiply
    12,788.31x = 19,185.09 × 5,392.77
  4. Step 4: Simplify right side
    12,788.31x = 103,460,777.80
  5. Step 5: Solve for x
    x = 103,460,777.80/12,788.31
  6. Step 6: Final answer
    x = 8,090.26

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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.