Home / 30,814.80-42,524.31-16,667.66

Finding the Fourth Proportional to 30,814.80, 42,524.31 and 16,667.66

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Solution

The fourth proportional to 30,814.80, 42,524.31 and 16,667.66 is: 23,001.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,814.80 : 42,524.31 = 16,667.66 : x
  2. Step 2: Convert to fraction form
    30,814.80/42,524.31 = 16,667.66/x
  3. Step 3: Cross multiply
    30,814.80x = 42,524.31 × 16,667.66
  4. Step 4: Simplify right side
    30,814.80x = 708,780,528.19
  5. Step 5: Solve for x
    x = 708,780,528.19/30,814.80
  6. Step 6: Final answer
    x = 23,001.30

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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.