Home / 13,975.85-20,963.79-3,587.60

Finding the Fourth Proportional to 13,975.85, 20,963.79 and 3,587.60

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Solution

The fourth proportional to 13,975.85, 20,963.79 and 3,587.60 is: 5,381.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,975.85 : 20,963.79 = 3,587.60 : x
  2. Step 2: Convert to fraction form
    13,975.85/20,963.79 = 3,587.60/x
  3. Step 3: Cross multiply
    13,975.85x = 20,963.79 × 3,587.60
  4. Step 4: Simplify right side
    13,975.85x = 75,209,588.19
  5. Step 5: Solve for x
    x = 75,209,588.19/13,975.85
  6. Step 6: Final answer
    x = 5,381.40

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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.