Home / 30,950.90-42,711.83-17,521.81

Finding the Fourth Proportional to 30,950.90, 42,711.83 and 17,521.81

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Solution

The fourth proportional to 30,950.90, 42,711.83 and 17,521.81 is: 24,179.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,950.90 : 42,711.83 = 17,521.81 : x
  2. Step 2: Convert to fraction form
    30,950.90/42,711.83 = 17,521.81/x
  3. Step 3: Cross multiply
    30,950.90x = 42,711.83 × 17,521.81
  4. Step 4: Simplify right side
    30,950.90x = 748,388,375.62
  5. Step 5: Solve for x
    x = 748,388,375.62/30,950.90
  6. Step 6: Final answer
    x = 24,179.86

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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.