Home / 28,505.75-42,703.26-13,725.05

Finding the Fourth Proportional to 28,505.75, 42,703.26 and 13,725.05

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Solution

The fourth proportional to 28,505.75, 42,703.26 and 13,725.05 is: 20,560.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,505.75 : 42,703.26 = 13,725.05 : x
  2. Step 2: Convert to fraction form
    28,505.75/42,703.26 = 13,725.05/x
  3. Step 3: Cross multiply
    28,505.75x = 42,703.26 × 13,725.05
  4. Step 4: Simplify right side
    28,505.75x = 586,104,378.66
  5. Step 5: Solve for x
    x = 586,104,378.66/28,505.75
  6. Step 6: Final answer
    x = 20,560.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.