Home / 15,782.80-23,645.40-12,845.20

Finding the Fourth Proportional to 15,782.80, 23,645.40 and 12,845.20

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Solution

The fourth proportional to 15,782.80, 23,645.40 and 12,845.20 is: 19,244.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,782.80 : 23,645.40 = 12,845.20 : x
  2. Step 2: Convert to fraction form
    15,782.80/23,645.40 = 12,845.20/x
  3. Step 3: Cross multiply
    15,782.80x = 23,645.40 × 12,845.20
  4. Step 4: Simplify right side
    15,782.80x = 303,729,892.08
  5. Step 5: Solve for x
    x = 303,729,892.08/15,782.80
  6. Step 6: Final answer
    x = 19,244.36

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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.