Home / 30,682.84-42,311.14-28,896.96

Finding the Fourth Proportional to 30,682.84, 42,311.14 and 28,896.96

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Solution

The fourth proportional to 30,682.84, 42,311.14 and 28,896.96 is: 39,848.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,682.84 : 42,311.14 = 28,896.96 : x
  2. Step 2: Convert to fraction form
    30,682.84/42,311.14 = 28,896.96/x
  3. Step 3: Cross multiply
    30,682.84x = 42,311.14 × 28,896.96
  4. Step 4: Simplify right side
    30,682.84x = 1,222,663,320.13
  5. Step 5: Solve for x
    x = 1,222,663,320.13/30,682.84
  6. Step 6: Final answer
    x = 39,848.44

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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.