Home / 20,703.84-28,570.44-11,272.41

Finding the Fourth Proportional to 20,703.84, 28,570.44 and 11,272.41

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Solution

The fourth proportional to 20,703.84, 28,570.44 and 11,272.41 is: 15,555.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,703.84 : 28,570.44 = 11,272.41 : x
  2. Step 2: Convert to fraction form
    20,703.84/28,570.44 = 11,272.41/x
  3. Step 3: Cross multiply
    20,703.84x = 28,570.44 × 11,272.41
  4. Step 4: Simplify right side
    20,703.84x = 322,057,713.56
  5. Step 5: Solve for x
    x = 322,057,713.56/20,703.84
  6. Step 6: Final answer
    x = 15,555.46

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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.