Home / 20,786.49-31,192.02-7,648.08

Finding the Fourth Proportional to 20,786.49, 31,192.02 and 7,648.08

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Solution

The fourth proportional to 20,786.49, 31,192.02 and 7,648.08 is: 11,476.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786.49 : 31,192.02 = 7,648.08 : x
  2. Step 2: Convert to fraction form
    20,786.49/31,192.02 = 7,648.08/x
  3. Step 3: Cross multiply
    20,786.49x = 31,192.02 × 7,648.08
  4. Step 4: Simplify right side
    20,786.49x = 238,559,064.32
  5. Step 5: Solve for x
    x = 238,559,064.32/20,786.49
  6. Step 6: Final answer
    x = 11,476.64

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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.