Home / 30,976.80-42,748.10-16,829.65

Finding the Fourth Proportional to 30,976.80, 42,748.10 and 16,829.65

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Solution

The fourth proportional to 30,976.80, 42,748.10 and 16,829.65 is: 23,224.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,976.80 : 42,748.10 = 16,829.65 : x
  2. Step 2: Convert to fraction form
    30,976.80/42,748.10 = 16,829.65/x
  3. Step 3: Cross multiply
    30,976.80x = 42,748.10 × 16,829.65
  4. Step 4: Simplify right side
    30,976.80x = 719,435,568.00
  5. Step 5: Solve for x
    x = 719,435,568.00/30,976.80
  6. Step 6: Final answer
    x = 23,224.98

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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.