Home / 20,935.81-28,861.54-14,965.30

Finding the Fourth Proportional to 20,935.81, 28,861.54 and 14,965.30

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Solution

The fourth proportional to 20,935.81, 28,861.54 and 14,965.30 is: 20,630.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,935.81 : 28,861.54 = 14,965.30 : x
  2. Step 2: Convert to fraction form
    20,935.81/28,861.54 = 14,965.30/x
  3. Step 3: Cross multiply
    20,935.81x = 28,861.54 × 14,965.30
  4. Step 4: Simplify right side
    20,935.81x = 431,921,604.56
  5. Step 5: Solve for x
    x = 431,921,604.56/20,935.81
  6. Step 6: Final answer
    x = 20,630.76

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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.