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Finding the Fourth Proportional to 20,357.75, 30,675.30 and 16,740.99

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Solution

The fourth proportional to 20,357.75, 30,675.30 and 16,740.99 is: 25,225.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,357.75 : 30,675.30 = 16,740.99 : x
  2. Step 2: Convert to fraction form
    20,357.75/30,675.30 = 16,740.99/x
  3. Step 3: Cross multiply
    20,357.75x = 30,675.30 × 16,740.99
  4. Step 4: Simplify right side
    20,357.75x = 513,534,890.55
  5. Step 5: Solve for x
    x = 513,534,890.55/20,357.75
  6. Step 6: Final answer
    x = 25,225.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.