Home / 20,899.54-31,329.14-7,040.98

Finding the Fourth Proportional to 20,899.54, 31,329.14 and 7,040.98

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Solution

The fourth proportional to 20,899.54, 31,329.14 and 7,040.98 is: 10,554.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,899.54 : 31,329.14 = 7,040.98 : x
  2. Step 2: Convert to fraction form
    20,899.54/31,329.14 = 7,040.98/x
  3. Step 3: Cross multiply
    20,899.54x = 31,329.14 × 7,040.98
  4. Step 4: Simplify right side
    20,899.54x = 220,587,848.16
  5. Step 5: Solve for x
    x = 220,587,848.16/20,899.54
  6. Step 6: Final answer
    x = 10,554.67

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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.