Home / 20,328.96-28,054.44-11,376.36

Finding the Fourth Proportional to 20,328.96, 28,054.44 and 11,376.36

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Solution

The fourth proportional to 20,328.96, 28,054.44 and 11,376.36 is: 15,699.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,328.96 : 28,054.44 = 11,376.36 : x
  2. Step 2: Convert to fraction form
    20,328.96/28,054.44 = 11,376.36/x
  3. Step 3: Cross multiply
    20,328.96x = 28,054.44 × 11,376.36
  4. Step 4: Simplify right side
    20,328.96x = 319,157,409.04
  5. Step 5: Solve for x
    x = 319,157,409.04/20,328.96
  6. Step 6: Final answer
    x = 15,699.64

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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.