Home / 30,765.73-42,456.70-16,618.57

Finding the Fourth Proportional to 30,765.73, 42,456.70 and 16,618.57

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Solution

The fourth proportional to 30,765.73, 42,456.70 and 16,618.57 is: 22,933.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,765.73 : 42,456.70 = 16,618.57 : x
  2. Step 2: Convert to fraction form
    30,765.73/42,456.70 = 16,618.57/x
  3. Step 3: Cross multiply
    30,765.73x = 42,456.70 × 16,618.57
  4. Step 4: Simplify right side
    30,765.73x = 705,569,640.92
  5. Step 5: Solve for x
    x = 705,569,640.92/30,765.73
  6. Step 6: Final answer
    x = 22,933.62

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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.