Home / 13,812.43-20,713.46-5,915.65

Finding the Fourth Proportional to 13,812.43, 20,713.46 and 5,915.65

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Solution

The fourth proportional to 13,812.43, 20,713.46 and 5,915.65 is: 8,871.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,812.43 : 20,713.46 = 5,915.65 : x
  2. Step 2: Convert to fraction form
    13,812.43/20,713.46 = 5,915.65/x
  3. Step 3: Cross multiply
    13,812.43x = 20,713.46 × 5,915.65
  4. Step 4: Simplify right side
    13,812.43x = 122,533,579.65
  5. Step 5: Solve for x
    x = 122,533,579.65/13,812.43
  6. Step 6: Final answer
    x = 8,871.25

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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.