Home / 30,765.34-42,456.20-16,618.20

Finding the Fourth Proportional to 30,765.34, 42,456.20 and 16,618.20

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Solution

The fourth proportional to 30,765.34, 42,456.20 and 16,618.20 is: 22,933.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,765.34 : 42,456.20 = 16,618.20 : x
  2. Step 2: Convert to fraction form
    30,765.34/42,456.20 = 16,618.20/x
  3. Step 3: Cross multiply
    30,765.34x = 42,456.20 × 16,618.20
  4. Step 4: Simplify right side
    30,765.34x = 705,545,622.84
  5. Step 5: Solve for x
    x = 705,545,622.84/30,765.34
  6. Step 6: Final answer
    x = 22,933.13

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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.