Home / 20,849.07-28,771.44-11,417.64

Finding the Fourth Proportional to 20,849.07, 28,771.44 and 11,417.64

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Solution

The fourth proportional to 20,849.07, 28,771.44 and 11,417.64 is: 15,756.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,849.07 : 28,771.44 = 11,417.64 : x
  2. Step 2: Convert to fraction form
    20,849.07/28,771.44 = 11,417.64/x
  3. Step 3: Cross multiply
    20,849.07x = 28,771.44 × 11,417.64
  4. Step 4: Simplify right side
    20,849.07x = 328,501,944.20
  5. Step 5: Solve for x
    x = 328,501,944.20/20,849.07
  6. Step 6: Final answer
    x = 15,756.19

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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.