Home / 30,800.80-42,505.12-16,653.65

Finding the Fourth Proportional to 30,800.80, 42,505.12 and 16,653.65

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Solution

The fourth proportional to 30,800.80, 42,505.12 and 16,653.65 is: 22,982.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,800.80 : 42,505.12 = 16,653.65 : x
  2. Step 2: Convert to fraction form
    30,800.80/42,505.12 = 16,653.65/x
  3. Step 3: Cross multiply
    30,800.80x = 42,505.12 × 16,653.65
  4. Step 4: Simplify right side
    30,800.80x = 707,865,179.16
  5. Step 5: Solve for x
    x = 707,865,179.16/30,800.80
  6. Step 6: Final answer
    x = 22,982.04

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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.