Home / 30,603.12-42,236.94-18,673.39

Finding the Fourth Proportional to 30,603.12, 42,236.94 and 18,673.39

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Solution

The fourth proportional to 30,603.12, 42,236.94 and 18,673.39 is: 25,772.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,603.12 : 42,236.94 = 18,673.39 : x
  2. Step 2: Convert to fraction form
    30,603.12/42,236.94 = 18,673.39/x
  3. Step 3: Cross multiply
    30,603.12x = 42,236.94 × 18,673.39
  4. Step 4: Simplify right side
    30,603.12x = 788,706,738.27
  5. Step 5: Solve for x
    x = 788,706,738.27/30,603.12
  6. Step 6: Final answer
    x = 25,772.11

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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.