Home / 20,902.42-28,844.69-11,470.74

Finding the Fourth Proportional to 20,902.42, 28,844.69 and 11,470.74

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Solution

The fourth proportional to 20,902.42, 28,844.69 and 11,470.74 is: 15,829.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,902.42 : 28,844.69 = 11,470.74 : x
  2. Step 2: Convert to fraction form
    20,902.42/28,844.69 = 11,470.74/x
  3. Step 3: Cross multiply
    20,902.42x = 28,844.69 × 11,470.74
  4. Step 4: Simplify right side
    20,902.42x = 330,869,939.37
  5. Step 5: Solve for x
    x = 330,869,939.37/20,902.42
  6. Step 6: Final answer
    x = 15,829.26

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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.