Home / 30,744.36-42,428.07-18,807.39

Finding the Fourth Proportional to 30,744.36, 42,428.07 and 18,807.39

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Solution

The fourth proportional to 30,744.36, 42,428.07 and 18,807.39 is: 25,954.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,744.36 : 42,428.07 = 18,807.39 : x
  2. Step 2: Convert to fraction form
    30,744.36/42,428.07 = 18,807.39/x
  3. Step 3: Cross multiply
    30,744.36x = 42,428.07 × 18,807.39
  4. Step 4: Simplify right side
    30,744.36x = 797,961,259.44
  5. Step 5: Solve for x
    x = 797,961,259.44/30,744.36
  6. Step 6: Final answer
    x = 25,954.72

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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.