Home / 19,785.60-27,303.20-11,404.80

Finding the Fourth Proportional to 19,785.60, 27,303.20 and 11,404.80

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Solution

The fourth proportional to 19,785.60, 27,303.20 and 11,404.80 is: 15,738.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,785.60 : 27,303.20 = 11,404.80 : x
  2. Step 2: Convert to fraction form
    19,785.60/27,303.20 = 11,404.80/x
  3. Step 3: Cross multiply
    19,785.60x = 27,303.20 × 11,404.80
  4. Step 4: Simplify right side
    19,785.60x = 311,387,535.36
  5. Step 5: Solve for x
    x = 311,387,535.36/19,785.60
  6. Step 6: Final answer
    x = 15,738.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.