Home / 20,935.56-28,861.20-14,965.05

Finding the Fourth Proportional to 20,935.56, 28,861.20 and 14,965.05

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Solution

The fourth proportional to 20,935.56, 28,861.20 and 14,965.05 is: 20,630.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,935.56 : 28,861.20 = 14,965.05 : x
  2. Step 2: Convert to fraction form
    20,935.56/28,861.20 = 14,965.05/x
  3. Step 3: Cross multiply
    20,935.56x = 28,861.20 × 14,965.05
  4. Step 4: Simplify right side
    20,935.56x = 431,909,301.06
  5. Step 5: Solve for x
    x = 431,909,301.06/20,935.56
  6. Step 6: Final answer
    x = 20,630.42

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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.