Home / 20,637.96-28,480.44-11,206.56

Finding the Fourth Proportional to 20,637.96, 28,480.44 and 11,206.56

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Solution

The fourth proportional to 20,637.96, 28,480.44 and 11,206.56 is: 15,465.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,637.96 : 28,480.44 = 11,206.56 : x
  2. Step 2: Convert to fraction form
    20,637.96/28,480.44 = 11,206.56/x
  3. Step 3: Cross multiply
    20,637.96x = 28,480.44 × 11,206.56
  4. Step 4: Simplify right side
    20,637.96x = 319,167,759.69
  5. Step 5: Solve for x
    x = 319,167,759.69/20,637.96
  6. Step 6: Final answer
    x = 15,465.08

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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.