Home / 13,209.60-19,790.10-12,334.80

Finding the Fourth Proportional to 13,209.60, 19,790.10 and 12,334.80

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Solution

The fourth proportional to 13,209.60, 19,790.10 and 12,334.80 is: 18,479.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,209.60 : 19,790.10 = 12,334.80 : x
  2. Step 2: Convert to fraction form
    13,209.60/19,790.10 = 12,334.80/x
  3. Step 3: Cross multiply
    13,209.60x = 19,790.10 × 12,334.80
  4. Step 4: Simplify right side
    13,209.60x = 244,106,925.48
  5. Step 5: Solve for x
    x = 244,106,925.48/13,209.60
  6. Step 6: Final answer
    x = 18,479.51

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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.