Home / 20,666.47-28,519.93-11,235.24

Finding the Fourth Proportional to 20,666.47, 28,519.93 and 11,235.24

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Solution

The fourth proportional to 20,666.47, 28,519.93 and 11,235.24 is: 15,504.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,666.47 : 28,519.93 = 11,235.24 : x
  2. Step 2: Convert to fraction form
    20,666.47/28,519.93 = 11,235.24/x
  3. Step 3: Cross multiply
    20,666.47x = 28,519.93 × 11,235.24
  4. Step 4: Simplify right side
    20,666.47x = 320,428,115.73
  5. Step 5: Solve for x
    x = 320,428,115.73/20,666.47
  6. Step 6: Final answer
    x = 15,504.73

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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.