Home / 13,664.40-20,496.60-12,454.80

Finding the Fourth Proportional to 13,664.40, 20,496.60 and 12,454.80

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Solution

The fourth proportional to 13,664.40, 20,496.60 and 12,454.80 is: 18,682.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,664.40 : 20,496.60 = 12,454.80 : x
  2. Step 2: Convert to fraction form
    13,664.40/20,496.60 = 12,454.80/x
  3. Step 3: Cross multiply
    13,664.40x = 20,496.60 × 12,454.80
  4. Step 4: Simplify right side
    13,664.40x = 255,281,053.68
  5. Step 5: Solve for x
    x = 255,281,053.68/13,664.40
  6. Step 6: Final answer
    x = 18,682.20

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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.