Home / 30,879.07-42,613.09-16,731.92

Finding the Fourth Proportional to 30,879.07, 42,613.09 and 16,731.92

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Solution

The fourth proportional to 30,879.07, 42,613.09 and 16,731.92 is: 23,090.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,879.07 : 42,613.09 = 16,731.92 : x
  2. Step 2: Convert to fraction form
    30,879.07/42,613.09 = 16,731.92/x
  3. Step 3: Cross multiply
    30,879.07x = 42,613.09 × 16,731.92
  4. Step 4: Simplify right side
    30,879.07x = 712,998,637.84
  5. Step 5: Solve for x
    x = 712,998,637.84/30,879.07
  6. Step 6: Final answer
    x = 23,090.03

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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.