Home / 20,741.13-28,622.70-11,309.76

Finding the Fourth Proportional to 20,741.13, 28,622.70 and 11,309.76

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Solution

The fourth proportional to 20,741.13, 28,622.70 and 11,309.76 is: 15,607.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,741.13 : 28,622.70 = 11,309.76 : x
  2. Step 2: Convert to fraction form
    20,741.13/28,622.70 = 11,309.76/x
  3. Step 3: Cross multiply
    20,741.13x = 28,622.70 × 11,309.76
  4. Step 4: Simplify right side
    20,741.13x = 323,715,867.55
  5. Step 5: Solve for x
    x = 323,715,867.55/20,741.13
  6. Step 6: Final answer
    x = 15,607.44

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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.