Home / 15,559.49-21,472.37-8,485.97

Finding the Fourth Proportional to 15,559.49, 21,472.37 and 8,485.97

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Solution

The fourth proportional to 15,559.49, 21,472.37 and 8,485.97 is: 11,710.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,559.49 : 21,472.37 = 8,485.97 : x
  2. Step 2: Convert to fraction form
    15,559.49/21,472.37 = 8,485.97/x
  3. Step 3: Cross multiply
    15,559.49x = 21,472.37 × 8,485.97
  4. Step 4: Simplify right side
    15,559.49x = 182,213,845.22
  5. Step 5: Solve for x
    x = 182,213,845.22/15,559.49
  6. Step 6: Final answer
    x = 11,710.79

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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.