Home / 13,800.18-20,698.41-8,254.35

Finding the Fourth Proportional to 13,800.18, 20,698.41 and 8,254.35

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Solution

The fourth proportional to 13,800.18, 20,698.41 and 8,254.35 is: 12,380.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,800.18 : 20,698.41 = 8,254.35 : x
  2. Step 2: Convert to fraction form
    13,800.18/20,698.41 = 8,254.35/x
  3. Step 3: Cross multiply
    13,800.18x = 20,698.41 × 8,254.35
  4. Step 4: Simplify right side
    13,800.18x = 170,851,920.58
  5. Step 5: Solve for x
    x = 170,851,920.58/13,800.18
  6. Step 6: Final answer
    x = 12,380.41

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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.