Home / 14,375.75-21,563.63-3,987.50

Finding the Fourth Proportional to 14,375.75, 21,563.63 and 3,987.50

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Solution

The fourth proportional to 14,375.75, 21,563.63 and 3,987.50 is: 5,981.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,375.75 : 21,563.63 = 3,987.50 : x
  2. Step 2: Convert to fraction form
    14,375.75/21,563.63 = 3,987.50/x
  3. Step 3: Cross multiply
    14,375.75x = 21,563.63 × 3,987.50
  4. Step 4: Simplify right side
    14,375.75x = 85,984,954.69
  5. Step 5: Solve for x
    x = 85,984,954.69/14,375.75
  6. Step 6: Final answer
    x = 5,981.25

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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.