Home / 20,346.50-28,076.80-11,271.24

Finding the Fourth Proportional to 20,346.50, 28,076.80 and 11,271.24

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Solution

The fourth proportional to 20,346.50, 28,076.80 and 11,271.24 is: 15,553.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,346.50 : 28,076.80 = 11,271.24 : x
  2. Step 2: Convert to fraction form
    20,346.50/28,076.80 = 11,271.24/x
  3. Step 3: Cross multiply
    20,346.50x = 28,076.80 × 11,271.24
  4. Step 4: Simplify right side
    20,346.50x = 316,460,351.23
  5. Step 5: Solve for x
    x = 316,460,351.23/20,346.50
  6. Step 6: Final answer
    x = 15,553.56

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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.