Home / 13,615.64-20,423.57-3,755.48

Finding the Fourth Proportional to 13,615.64, 20,423.57 and 3,755.48

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Solution

The fourth proportional to 13,615.64, 20,423.57 and 3,755.48 is: 5,633.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,615.64 : 20,423.57 = 3,755.48 : x
  2. Step 2: Convert to fraction form
    13,615.64/20,423.57 = 3,755.48/x
  3. Step 3: Cross multiply
    13,615.64x = 20,423.57 × 3,755.48
  4. Step 4: Simplify right side
    13,615.64x = 76,700,340.95
  5. Step 5: Solve for x
    x = 76,700,340.95/13,615.64
  6. Step 6: Final answer
    x = 5,633.25

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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.