Home / 20,313.81-28,033.47-11,360.34

Finding the Fourth Proportional to 20,313.81, 28,033.47 and 11,360.34

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Solution

The fourth proportional to 20,313.81, 28,033.47 and 11,360.34 is: 15,677.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,313.81 : 28,033.47 = 11,360.34 : x
  2. Step 2: Convert to fraction form
    20,313.81/28,033.47 = 11,360.34/x
  3. Step 3: Cross multiply
    20,313.81x = 28,033.47 × 11,360.34
  4. Step 4: Simplify right side
    20,313.81x = 318,469,750.58
  5. Step 5: Solve for x
    x = 318,469,750.58/20,313.81
  6. Step 6: Final answer
    x = 15,677.50

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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.