Home / 38,853.42-53,612.67-21,857.09

Finding the Fourth Proportional to 38,853.42, 53,612.67 and 21,857.09

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Solution

The fourth proportional to 38,853.42, 53,612.67 and 21,857.09 is: 30,159.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,853.42 : 53,612.67 = 21,857.09 : x
  2. Step 2: Convert to fraction form
    38,853.42/53,612.67 = 21,857.09/x
  3. Step 3: Cross multiply
    38,853.42x = 53,612.67 × 21,857.09
  4. Step 4: Simplify right side
    38,853.42x = 1,171,816,873.94
  5. Step 5: Solve for x
    x = 1,171,816,873.94/38,853.42
  6. Step 6: Final answer
    x = 30,159.94

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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.