Home / 13,387.22-18,473.89-7,419.44

Finding the Fourth Proportional to 13,387.22, 18,473.89 and 7,419.44

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Solution

The fourth proportional to 13,387.22, 18,473.89 and 7,419.44 is: 10,238.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.22 : 18,473.89 = 7,419.44 : x
  2. Step 2: Convert to fraction form
    13,387.22/18,473.89 = 7,419.44/x
  3. Step 3: Cross multiply
    13,387.22x = 18,473.89 × 7,419.44
  4. Step 4: Simplify right side
    13,387.22x = 137,065,946.06
  5. Step 5: Solve for x
    x = 137,065,946.06/13,387.22
  6. Step 6: Final answer
    x = 10,238.57

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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.