Home / 21,337.09-31,925.44-20,212

Finding the Fourth Proportional to 21,337.09, 31,925.44 and 20,212

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Solution

The fourth proportional to 21,337.09, 31,925.44 and 20,212 is: 30,242.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,337.09 : 31,925.44 = 20,212 : x
  2. Step 2: Convert to fraction form
    21,337.09/31,925.44 = 20,212/x
  3. Step 3: Cross multiply
    21,337.09x = 31,925.44 × 20,212
  4. Step 4: Simplify right side
    21,337.09x = 645,276,993.28
  5. Step 5: Solve for x
    x = 645,276,993.28/21,337.09
  6. Step 6: Final answer
    x = 30,242.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.