Home / 20,713.70-31,074.60-8,867.45

Finding the Fourth Proportional to 20,713.70, 31,074.60 and 8,867.45

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Solution

The fourth proportional to 20,713.70, 31,074.60 and 8,867.45 is: 13,302.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,713.70 : 31,074.60 = 8,867.45 : x
  2. Step 2: Convert to fraction form
    20,713.70/31,074.60 = 8,867.45/x
  3. Step 3: Cross multiply
    20,713.70x = 31,074.60 × 8,867.45
  4. Step 4: Simplify right side
    20,713.70x = 275,552,461.77
  5. Step 5: Solve for x
    x = 275,552,461.77/20,713.70
  6. Step 6: Final answer
    x = 13,302.91

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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.