Home / 20,489.54-30,760.23-17,430.98

Finding the Fourth Proportional to 20,489.54, 30,760.23 and 17,430.98

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Solution

The fourth proportional to 20,489.54, 30,760.23 and 17,430.98 is: 26,168.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,489.54 : 30,760.23 = 17,430.98 : x
  2. Step 2: Convert to fraction form
    20,489.54/30,760.23 = 17,430.98/x
  3. Step 3: Cross multiply
    20,489.54x = 30,760.23 × 17,430.98
  4. Step 4: Simplify right side
    20,489.54x = 536,180,953.93
  5. Step 5: Solve for x
    x = 536,180,953.93/20,489.54
  6. Step 6: Final answer
    x = 26,168.52

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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.