Home / 20,328.81-28,052.44-11,376.24

Finding the Fourth Proportional to 20,328.81, 28,052.44 and 11,376.24

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Solution

The fourth proportional to 20,328.81, 28,052.44 and 11,376.24 is: 15,698.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,328.81 : 28,052.44 = 11,376.24 : x
  2. Step 2: Convert to fraction form
    20,328.81/28,052.44 = 11,376.24/x
  3. Step 3: Cross multiply
    20,328.81x = 28,052.44 × 11,376.24
  4. Step 4: Simplify right side
    20,328.81x = 319,131,290.03
  5. Step 5: Solve for x
    x = 319,131,290.03/20,328.81
  6. Step 6: Final answer
    x = 15,698.47

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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.