Home / 20,800.31-28,707.42-11,848.67

Finding the Fourth Proportional to 20,800.31, 28,707.42 and 11,848.67

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Solution

The fourth proportional to 20,800.31, 28,707.42 and 11,848.67 is: 16,352.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,800.31 : 28,707.42 = 11,848.67 : x
  2. Step 2: Convert to fraction form
    20,800.31/28,707.42 = 11,848.67/x
  3. Step 3: Cross multiply
    20,800.31x = 28,707.42 × 11,848.67
  4. Step 4: Simplify right side
    20,800.31x = 340,144,602.59
  5. Step 5: Solve for x
    x = 340,144,602.59/20,800.31
  6. Step 6: Final answer
    x = 16,352.87

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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.