Home / 30,879.92-42,614.40-16,732.72

Finding the Fourth Proportional to 30,879.92, 42,614.40 and 16,732.72

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Solution

The fourth proportional to 30,879.92, 42,614.40 and 16,732.72 is: 23,091.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,879.92 : 42,614.40 = 16,732.72 : x
  2. Step 2: Convert to fraction form
    30,879.92/42,614.40 = 16,732.72/x
  3. Step 3: Cross multiply
    30,879.92x = 42,614.40 × 16,732.72
  4. Step 4: Simplify right side
    30,879.92x = 713,054,823.17
  5. Step 5: Solve for x
    x = 713,054,823.17/30,879.92
  6. Step 6: Final answer
    x = 23,091.21

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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.