Home / 21,202.62-31,804.47-11,837.40

Finding the Fourth Proportional to 21,202.62, 31,804.47 and 11,837.40

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Solution

The fourth proportional to 21,202.62, 31,804.47 and 11,837.40 is: 17,756.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,202.62 : 31,804.47 = 11,837.40 : x
  2. Step 2: Convert to fraction form
    21,202.62/31,804.47 = 11,837.40/x
  3. Step 3: Cross multiply
    21,202.62x = 31,804.47 × 11,837.40
  4. Step 4: Simplify right side
    21,202.62x = 376,482,233.18
  5. Step 5: Solve for x
    x = 376,482,233.18/21,202.62
  6. Step 6: Final answer
    x = 17,756.40

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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.