Home / 30,765.53-42,456.45-16,618.38

Finding the Fourth Proportional to 30,765.53, 42,456.45 and 16,618.38

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Solution

The fourth proportional to 30,765.53, 42,456.45 and 16,618.38 is: 22,933.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,765.53 : 42,456.45 = 16,618.38 : x
  2. Step 2: Convert to fraction form
    30,765.53/42,456.45 = 16,618.38/x
  3. Step 3: Cross multiply
    30,765.53x = 42,456.45 × 16,618.38
  4. Step 4: Simplify right side
    30,765.53x = 705,557,419.55
  5. Step 5: Solve for x
    x = 705,557,419.55/30,765.53
  6. Step 6: Final answer
    x = 22,933.37

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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.