Home / 28,453.23-39,261.84-15,878.51

Finding the Fourth Proportional to 28,453.23, 39,261.84 and 15,878.51

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Solution

The fourth proportional to 28,453.23, 39,261.84 and 15,878.51 is: 21,910.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,453.23 : 39,261.84 = 15,878.51 : x
  2. Step 2: Convert to fraction form
    28,453.23/39,261.84 = 15,878.51/x
  3. Step 3: Cross multiply
    28,453.23x = 39,261.84 × 15,878.51
  4. Step 4: Simplify right side
    28,453.23x = 623,419,439.67
  5. Step 5: Solve for x
    x = 623,419,439.67/28,453.23
  6. Step 6: Final answer
    x = 21,910.32

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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.