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Finding the Fourth Proportional to 30,448.56, 42,019.02 and 16,836.61

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Solution

The fourth proportional to 30,448.56, 42,019.02 and 16,836.61 is: 23,234.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,448.56 : 42,019.02 = 16,836.61 : x
  2. Step 2: Convert to fraction form
    30,448.56/42,019.02 = 16,836.61/x
  3. Step 3: Cross multiply
    30,448.56x = 42,019.02 × 16,836.61
  4. Step 4: Simplify right side
    30,448.56x = 707,457,852.32
  5. Step 5: Solve for x
    x = 707,457,852.32/30,448.56
  6. Step 6: Final answer
    x = 23,234.53

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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.