Home / 30,981.72-42,754.23-16,834.62

Finding the Fourth Proportional to 30,981.72, 42,754.23 and 16,834.62

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Solution

The fourth proportional to 30,981.72, 42,754.23 and 16,834.62 is: 23,231.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,981.72 : 42,754.23 = 16,834.62 : x
  2. Step 2: Convert to fraction form
    30,981.72/42,754.23 = 16,834.62/x
  3. Step 3: Cross multiply
    30,981.72x = 42,754.23 × 16,834.62
  4. Step 4: Simplify right side
    30,981.72x = 719,751,215.44
  5. Step 5: Solve for x
    x = 719,751,215.44/30,981.72
  6. Step 6: Final answer
    x = 23,231.48

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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.