Home / 15,412.23-21,279.51-11,820.96

Finding the Fourth Proportional to 15,412.23, 21,279.51 and 11,820.96

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Solution

The fourth proportional to 15,412.23, 21,279.51 and 11,820.96 is: 16,321.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,412.23 : 21,279.51 = 11,820.96 : x
  2. Step 2: Convert to fraction form
    15,412.23/21,279.51 = 11,820.96/x
  3. Step 3: Cross multiply
    15,412.23x = 21,279.51 × 11,820.96
  4. Step 4: Simplify right side
    15,412.23x = 251,544,236.53
  5. Step 5: Solve for x
    x = 251,544,236.53/15,412.23
  6. Step 6: Final answer
    x = 16,321.08

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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.