Home / 30,912.76-42,659.70-16,765.72

Finding the Fourth Proportional to 30,912.76, 42,659.70 and 16,765.72

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Solution

The fourth proportional to 30,912.76, 42,659.70 and 16,765.72 is: 23,136.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,912.76 : 42,659.70 = 16,765.72 : x
  2. Step 2: Convert to fraction form
    30,912.76/42,659.70 = 16,765.72/x
  3. Step 3: Cross multiply
    30,912.76x = 42,659.70 × 16,765.72
  4. Step 4: Simplify right side
    30,912.76x = 715,220,585.48
  5. Step 5: Solve for x
    x = 715,220,585.48/30,912.76
  6. Step 6: Final answer
    x = 23,136.74

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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.