Home / 30,912.76-42,659.85-16,765.60

Finding the Fourth Proportional to 30,912.76, 42,659.85 and 16,765.60

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Solution

The fourth proportional to 30,912.76, 42,659.85 and 16,765.60 is: 23,136.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,912.76 : 42,659.85 = 16,765.60 : x
  2. Step 2: Convert to fraction form
    30,912.76/42,659.85 = 16,765.60/x
  3. Step 3: Cross multiply
    30,912.76x = 42,659.85 × 16,765.60
  4. Step 4: Simplify right side
    30,912.76x = 715,217,981.16
  5. Step 5: Solve for x
    x = 715,217,981.16/30,912.76
  6. Step 6: Final answer
    x = 23,136.66

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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.