Home / 12,698.20-19,047.30-9,782.20

Finding the Fourth Proportional to 12,698.20, 19,047.30 and 9,782.20

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Solution

The fourth proportional to 12,698.20, 19,047.30 and 9,782.20 is: 14,673.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,698.20 : 19,047.30 = 9,782.20 : x
  2. Step 2: Convert to fraction form
    12,698.20/19,047.30 = 9,782.20/x
  3. Step 3: Cross multiply
    12,698.20x = 19,047.30 × 9,782.20
  4. Step 4: Simplify right side
    12,698.20x = 186,324,498.06
  5. Step 5: Solve for x
    x = 186,324,498.06/12,698.20
  6. Step 6: Final answer
    x = 14,673.30

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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.