Home / 13,387.36-18,475.62-7,419.60

Finding the Fourth Proportional to 13,387.36, 18,475.62 and 7,419.60

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Solution

The fourth proportional to 13,387.36, 18,475.62 and 7,419.60 is: 10,239.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.36 : 18,475.62 = 7,419.60 : x
  2. Step 2: Convert to fraction form
    13,387.36/18,475.62 = 7,419.60/x
  3. Step 3: Cross multiply
    13,387.36x = 18,475.62 × 7,419.60
  4. Step 4: Simplify right side
    13,387.36x = 137,081,710.15
  5. Step 5: Solve for x
    x = 137,081,710.15/13,387.36
  6. Step 6: Final answer
    x = 10,239.64

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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.