Home / 20,397.96-28,147.50-14,433.12

Finding the Fourth Proportional to 20,397.96, 28,147.50 and 14,433.12

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Solution

The fourth proportional to 20,397.96, 28,147.50 and 14,433.12 is: 19,916.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,397.96 : 28,147.50 = 14,433.12 : x
  2. Step 2: Convert to fraction form
    20,397.96/28,147.50 = 14,433.12/x
  3. Step 3: Cross multiply
    20,397.96x = 28,147.50 × 14,433.12
  4. Step 4: Simplify right side
    20,397.96x = 406,256,245.20
  5. Step 5: Solve for x
    x = 406,256,245.20/20,397.96
  6. Step 6: Final answer
    x = 19,916.51

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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.