Home / 20,573.48-28,391.40-11,620.56

Finding the Fourth Proportional to 20,573.48, 28,391.40 and 11,620.56

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Solution

The fourth proportional to 20,573.48, 28,391.40 and 11,620.56 is: 16,036.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,573.48 : 28,391.40 = 11,620.56 : x
  2. Step 2: Convert to fraction form
    20,573.48/28,391.40 = 11,620.56/x
  3. Step 3: Cross multiply
    20,573.48x = 28,391.40 × 11,620.56
  4. Step 4: Simplify right side
    20,573.48x = 329,923,967.18
  5. Step 5: Solve for x
    x = 329,923,967.18/20,573.48
  6. Step 6: Final answer
    x = 16,036.37

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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.