Home / 15,804.48-21,810.00-8,634.36

Finding the Fourth Proportional to 15,804.48, 21,810.00 and 8,634.36

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Solution

The fourth proportional to 15,804.48, 21,810.00 and 8,634.36 is: 11,915.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,804.48 : 21,810.00 = 8,634.36 : x
  2. Step 2: Convert to fraction form
    15,804.48/21,810.00 = 8,634.36/x
  3. Step 3: Cross multiply
    15,804.48x = 21,810.00 × 8,634.36
  4. Step 4: Simplify right side
    15,804.48x = 188,315,348.43
  5. Step 5: Solve for x
    x = 188,315,348.43/15,804.48
  6. Step 6: Final answer
    x = 11,915.31

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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.