Home / 20,346.86-28,080.06-11,394.12

Finding the Fourth Proportional to 20,346.86, 28,080.06 and 11,394.12

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Solution

The fourth proportional to 20,346.86, 28,080.06 and 11,394.12 is: 15,724.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,346.86 : 28,080.06 = 11,394.12 : x
  2. Step 2: Convert to fraction form
    20,346.86/28,080.06 = 11,394.12/x
  3. Step 3: Cross multiply
    20,346.86x = 28,080.06 × 11,394.12
  4. Step 4: Simplify right side
    20,346.86x = 319,947,573.25
  5. Step 5: Solve for x
    x = 319,947,573.25/20,346.86
  6. Step 6: Final answer
    x = 15,724.67

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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.