Home / 13,515.46-20,275.78-4,153.80

Finding the Fourth Proportional to 13,515.46, 20,275.78 and 4,153.80

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Solution

The fourth proportional to 13,515.46, 20,275.78 and 4,153.80 is: 6,231.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.46 : 20,275.78 = 4,153.80 : x
  2. Step 2: Convert to fraction form
    13,515.46/20,275.78 = 4,153.80/x
  3. Step 3: Cross multiply
    13,515.46x = 20,275.78 × 4,153.80
  4. Step 4: Simplify right side
    13,515.46x = 84,221,534.96
  5. Step 5: Solve for x
    x = 84,221,534.96/13,515.46
  6. Step 6: Final answer
    x = 6,231.50

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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.