Home / 13,615.85-20,415.88-6,216.35

Finding the Fourth Proportional to 13,615.85, 20,415.88 and 6,216.35

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Solution

The fourth proportional to 13,615.85, 20,415.88 and 6,216.35 is: 9,320.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,615.85 : 20,415.88 = 6,216.35 : x
  2. Step 2: Convert to fraction form
    13,615.85/20,415.88 = 6,216.35/x
  3. Step 3: Cross multiply
    13,615.85x = 20,415.88 × 6,216.35
  4. Step 4: Simplify right side
    13,615.85x = 126,912,255.64
  5. Step 5: Solve for x
    x = 126,912,255.64/13,615.85
  6. Step 6: Final answer
    x = 9,320.92

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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.