Home / 20,414.03-28,171.40-11,461.50

Finding the Fourth Proportional to 20,414.03, 28,171.40 and 11,461.50

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Solution

The fourth proportional to 20,414.03, 28,171.40 and 11,461.50 is: 15,816.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,414.03 : 28,171.40 = 11,461.50 : x
  2. Step 2: Convert to fraction form
    20,414.03/28,171.40 = 11,461.50/x
  3. Step 3: Cross multiply
    20,414.03x = 28,171.40 × 11,461.50
  4. Step 4: Simplify right side
    20,414.03x = 322,886,443.79
  5. Step 5: Solve for x
    x = 322,886,443.79/20,414.03
  6. Step 6: Final answer
    x = 15,816.89

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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.