Home / 20,438.67-30,657.96-5,647.57

Finding the Fourth Proportional to 20,438.67, 30,657.96 and 5,647.57

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Solution

The fourth proportional to 20,438.67, 30,657.96 and 5,647.57 is: 8,471.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,438.67 : 30,657.96 = 5,647.57 : x
  2. Step 2: Convert to fraction form
    20,438.67/30,657.96 = 5,647.57/x
  3. Step 3: Cross multiply
    20,438.67x = 30,657.96 × 5,647.57
  4. Step 4: Simplify right side
    20,438.67x = 173,142,898.51
  5. Step 5: Solve for x
    x = 173,142,898.51/20,438.67
  6. Step 6: Final answer
    x = 8,471.34

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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.