Home / 20,938.44-31,348.26-18,967.62

Finding the Fourth Proportional to 20,938.44, 31,348.26 and 18,967.62

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Solution

The fourth proportional to 20,938.44, 31,348.26 and 18,967.62 is: 28,397.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,938.44 : 31,348.26 = 18,967.62 : x
  2. Step 2: Convert to fraction form
    20,938.44/31,348.26 = 18,967.62/x
  3. Step 3: Cross multiply
    20,938.44x = 31,348.26 × 18,967.62
  4. Step 4: Simplify right side
    20,938.44x = 594,601,883.34
  5. Step 5: Solve for x
    x = 594,601,883.34/20,938.44
  6. Step 6: Final answer
    x = 28,397.62

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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.