Home / 21,559.90-29,752.19-11,999.37

Finding the Fourth Proportional to 21,559.90, 29,752.19 and 11,999.37

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Solution

The fourth proportional to 21,559.90, 29,752.19 and 11,999.37 is: 16,558.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,559.90 : 29,752.19 = 11,999.37 : x
  2. Step 2: Convert to fraction form
    21,559.90/29,752.19 = 11,999.37/x
  3. Step 3: Cross multiply
    21,559.90x = 29,752.19 × 11,999.37
  4. Step 4: Simplify right side
    21,559.90x = 357,007,536.12
  5. Step 5: Solve for x
    x = 357,007,536.12/21,559.90
  6. Step 6: Final answer
    x = 16,558.87

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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.