Home / 30,589.87-45,875.09-20,792.11

Finding the Fourth Proportional to 30,589.87, 45,875.09 and 20,792.11

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Solution

The fourth proportional to 30,589.87, 45,875.09 and 20,792.11 is: 31,181.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,589.87 : 45,875.09 = 20,792.11 : x
  2. Step 2: Convert to fraction form
    30,589.87/45,875.09 = 20,792.11/x
  3. Step 3: Cross multiply
    30,589.87x = 45,875.09 × 20,792.11
  4. Step 4: Simplify right side
    30,589.87x = 953,839,909.91
  5. Step 5: Solve for x
    x = 953,839,909.91/30,589.87
  6. Step 6: Final answer
    x = 31,181.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.