Home / 19,365.20-29,009.40-11,550.80

Finding the Fourth Proportional to 19,365.20, 29,009.40 and 11,550.80

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Solution

The fourth proportional to 19,365.20, 29,009.40 and 11,550.80 is: 17,303.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,365.20 : 29,009.40 = 11,550.80 : x
  2. Step 2: Convert to fraction form
    19,365.20/29,009.40 = 11,550.80/x
  3. Step 3: Cross multiply
    19,365.20x = 29,009.40 × 11,550.80
  4. Step 4: Simplify right side
    19,365.20x = 335,081,777.52
  5. Step 5: Solve for x
    x = 335,081,777.52/19,365.20
  6. Step 6: Final answer
    x = 17,303.30

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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.