Home / 13,216.79-18,239.60-7,550.33

Finding the Fourth Proportional to 13,216.79, 18,239.60 and 7,550.33

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Solution

The fourth proportional to 13,216.79, 18,239.60 and 7,550.33 is: 10,419.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,216.79 : 18,239.60 = 7,550.33 : x
  2. Step 2: Convert to fraction form
    13,216.79/18,239.60 = 7,550.33/x
  3. Step 3: Cross multiply
    13,216.79x = 18,239.60 × 7,550.33
  4. Step 4: Simplify right side
    13,216.79x = 137,714,999.07
  5. Step 5: Solve for x
    x = 137,714,999.07/13,216.79
  6. Step 6: Final answer
    x = 10,419.70

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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.