Home / 20,269.40-30,354.68-11,477.66

Finding the Fourth Proportional to 20,269.40, 30,354.68 and 11,477.66

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Solution

The fourth proportional to 20,269.40, 30,354.68 and 11,477.66 is: 17,188.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,269.40 : 30,354.68 = 11,477.66 : x
  2. Step 2: Convert to fraction form
    20,269.40/30,354.68 = 11,477.66/x
  3. Step 3: Cross multiply
    20,269.40x = 30,354.68 × 11,477.66
  4. Step 4: Simplify right side
    20,269.40x = 348,400,573.37
  5. Step 5: Solve for x
    x = 348,400,573.37/20,269.40
  6. Step 6: Final answer
    x = 17,188.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.