Home / 30,943.39-42,697.68-18,189.01

Finding the Fourth Proportional to 30,943.39, 42,697.68 and 18,189.01

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Solution

The fourth proportional to 30,943.39, 42,697.68 and 18,189.01 is: 25,098.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,943.39 : 42,697.68 = 18,189.01 : x
  2. Step 2: Convert to fraction form
    30,943.39/42,697.68 = 18,189.01/x
  3. Step 3: Cross multiply
    30,943.39x = 42,697.68 × 18,189.01
  4. Step 4: Simplify right side
    30,943.39x = 776,628,375.80
  5. Step 5: Solve for x
    x = 776,628,375.80/30,943.39
  6. Step 6: Final answer
    x = 25,098.36

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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.