Home / 13,725.81-20,589.93-3,865.19

Finding the Fourth Proportional to 13,725.81, 20,589.93 and 3,865.19

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Solution

The fourth proportional to 13,725.81, 20,589.93 and 3,865.19 is: 5,798.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,725.81 : 20,589.93 = 3,865.19 : x
  2. Step 2: Convert to fraction form
    13,725.81/20,589.93 = 3,865.19/x
  3. Step 3: Cross multiply
    13,725.81x = 20,589.93 × 3,865.19
  4. Step 4: Simplify right side
    13,725.81x = 79,583,888.59
  5. Step 5: Solve for x
    x = 79,583,888.59/13,725.81
  6. Step 6: Final answer
    x = 5,798.12

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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.