Home / 20,913.51-28,860.28-11,482

Finding the Fourth Proportional to 20,913.51, 28,860.28 and 11,482

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Solution

The fourth proportional to 20,913.51, 28,860.28 and 11,482 is: 15,844.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,913.51 : 28,860.28 = 11,482 : x
  2. Step 2: Convert to fraction form
    20,913.51/28,860.28 = 11,482/x
  3. Step 3: Cross multiply
    20,913.51x = 28,860.28 × 11,482
  4. Step 4: Simplify right side
    20,913.51x = 331,373,734.96
  5. Step 5: Solve for x
    x = 331,373,734.96/20,913.51
  6. Step 6: Final answer
    x = 15,844.96

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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.