Home / 28,211.40-38,930.37-16,278.59

Finding the Fourth Proportional to 28,211.40, 38,930.37 and 16,278.59

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Solution

The fourth proportional to 28,211.40, 38,930.37 and 16,278.59 is: 22,463.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,211.40 : 38,930.37 = 16,278.59 : x
  2. Step 2: Convert to fraction form
    28,211.40/38,930.37 = 16,278.59/x
  3. Step 3: Cross multiply
    28,211.40x = 38,930.37 × 16,278.59
  4. Step 4: Simplify right side
    28,211.40x = 633,731,450.39
  5. Step 5: Solve for x
    x = 633,731,450.39/28,211.40
  6. Step 6: Final answer
    x = 22,463.67

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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.