Home / 12,161.90-16,782.48-7,125.44

Finding the Fourth Proportional to 12,161.90, 16,782.48 and 7,125.44

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Solution

The fourth proportional to 12,161.90, 16,782.48 and 7,125.44 is: 9,832.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,161.90 : 16,782.48 = 7,125.44 : x
  2. Step 2: Convert to fraction form
    12,161.90/16,782.48 = 7,125.44/x
  3. Step 3: Cross multiply
    12,161.90x = 16,782.48 × 7,125.44
  4. Step 4: Simplify right side
    12,161.90x = 119,582,554.29
  5. Step 5: Solve for x
    x = 119,582,554.29/12,161.90
  6. Step 6: Final answer
    x = 9,832.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.