Home / 13,387.49-18,474.44-7,419.23

Finding the Fourth Proportional to 13,387.49, 18,474.44 and 7,419.23

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Solution

The fourth proportional to 13,387.49, 18,474.44 and 7,419.23 is: 10,238.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.49 : 18,474.44 = 7,419.23 : x
  2. Step 2: Convert to fraction form
    13,387.49/18,474.44 = 7,419.23/x
  3. Step 3: Cross multiply
    13,387.49x = 18,474.44 × 7,419.23
  4. Step 4: Simplify right side
    13,387.49x = 137,065,990.01
  5. Step 5: Solve for x
    x = 137,065,990.01/13,387.49
  6. Step 6: Final answer
    x = 10,238.37

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Half scale
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Double scale
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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.