Home / 13,796.58-20,588.85-12,320.28

Finding the Fourth Proportional to 13,796.58, 20,588.85 and 12,320.28

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Solution

The fourth proportional to 13,796.58, 20,588.85 and 12,320.28 is: 18,385.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,796.58 : 20,588.85 = 12,320.28 : x
  2. Step 2: Convert to fraction form
    13,796.58/20,588.85 = 12,320.28/x
  3. Step 3: Cross multiply
    13,796.58x = 20,588.85 × 12,320.28
  4. Step 4: Simplify right side
    13,796.58x = 253,660,396.88
  5. Step 5: Solve for x
    x = 253,660,396.88/13,796.58
  6. Step 6: Final answer
    x = 18,385.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.