Home / 20,816.01-28,725.50-11,384.37

Finding the Fourth Proportional to 20,816.01, 28,725.50 and 11,384.37

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Solution

The fourth proportional to 20,816.01, 28,725.50 and 11,384.37 is: 15,710.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,816.01 : 28,725.50 = 11,384.37 : x
  2. Step 2: Convert to fraction form
    20,816.01/28,725.50 = 11,384.37/x
  3. Step 3: Cross multiply
    20,816.01x = 28,725.50 × 11,384.37
  4. Step 4: Simplify right side
    20,816.01x = 327,021,548.35
  5. Step 5: Solve for x
    x = 327,021,548.35/20,816.01
  6. Step 6: Final answer
    x = 15,710.10

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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.