Home / 20,269.46-27,980.98-11,886.50

Finding the Fourth Proportional to 20,269.46, 27,980.98 and 11,886.50

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Solution

The fourth proportional to 20,269.46, 27,980.98 and 11,886.50 is: 16,408.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,269.46 : 27,980.98 = 11,886.50 : x
  2. Step 2: Convert to fraction form
    20,269.46/27,980.98 = 11,886.50/x
  3. Step 3: Cross multiply
    20,269.46x = 27,980.98 × 11,886.50
  4. Step 4: Simplify right side
    20,269.46x = 332,595,918.77
  5. Step 5: Solve for x
    x = 332,595,918.77/20,269.46
  6. Step 6: Final answer
    x = 16,408.72

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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.