Home / 30,857.11-42,582.30-16,709.78

Finding the Fourth Proportional to 30,857.11, 42,582.30 and 16,709.78

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Solution

The fourth proportional to 30,857.11, 42,582.30 and 16,709.78 is: 23,059.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,857.11 : 42,582.30 = 16,709.78 : x
  2. Step 2: Convert to fraction form
    30,857.11/42,582.30 = 16,709.78/x
  3. Step 3: Cross multiply
    30,857.11x = 42,582.30 × 16,709.78
  4. Step 4: Simplify right side
    30,857.11x = 711,540,864.89
  5. Step 5: Solve for x
    x = 711,540,864.89/30,857.11
  6. Step 6: Final answer
    x = 23,059.22

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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.