Home / 19,231.80-28,761.30-16,121.40

Finding the Fourth Proportional to 19,231.80, 28,761.30 and 16,121.40

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Solution

The fourth proportional to 19,231.80, 28,761.30 and 16,121.40 is: 24,109.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,231.80 : 28,761.30 = 16,121.40 : x
  2. Step 2: Convert to fraction form
    19,231.80/28,761.30 = 16,121.40/x
  3. Step 3: Cross multiply
    19,231.80x = 28,761.30 × 16,121.40
  4. Step 4: Simplify right side
    19,231.80x = 463,672,421.82
  5. Step 5: Solve for x
    x = 463,672,421.82/19,231.80
  6. Step 6: Final answer
    x = 24,109.67

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1.5x scale

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.