Home / 20,908.96-28,854.04-11,477.53

Finding the Fourth Proportional to 20,908.96, 28,854.04 and 11,477.53

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Solution

The fourth proportional to 20,908.96, 28,854.04 and 11,477.53 is: 15,838.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.96 : 28,854.04 = 11,477.53 : x
  2. Step 2: Convert to fraction form
    20,908.96/28,854.04 = 11,477.53/x
  3. Step 3: Cross multiply
    20,908.96x = 28,854.04 × 11,477.53
  4. Step 4: Simplify right side
    20,908.96x = 331,173,109.72
  5. Step 5: Solve for x
    x = 331,173,109.72/20,908.96
  6. Step 6: Final answer
    x = 15,838.81

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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.