Home / 13,161.60-19,785.60-9,292.80

Finding the Fourth Proportional to 13,161.60, 19,785.60 and 9,292.80

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Solution

The fourth proportional to 13,161.60, 19,785.60 and 9,292.80 is: 13,969.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.60 : 19,785.60 = 9,292.80 : x
  2. Step 2: Convert to fraction form
    13,161.60/19,785.60 = 9,292.80/x
  3. Step 3: Cross multiply
    13,161.60x = 19,785.60 × 9,292.80
  4. Step 4: Simplify right side
    13,161.60x = 183,863,623.68
  5. Step 5: Solve for x
    x = 183,863,623.68/13,161.60
  6. Step 6: Final answer
    x = 13,969.70

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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.