Home / 21,102.67-31,669.55-10,009.39

Finding the Fourth Proportional to 21,102.67, 31,669.55 and 10,009.39

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Solution

The fourth proportional to 21,102.67, 31,669.55 and 10,009.39 is: 15,021.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,102.67 : 31,669.55 = 10,009.39 : x
  2. Step 2: Convert to fraction form
    21,102.67/31,669.55 = 10,009.39/x
  3. Step 3: Cross multiply
    21,102.67x = 31,669.55 × 10,009.39
  4. Step 4: Simplify right side
    21,102.67x = 316,992,877.07
  5. Step 5: Solve for x
    x = 316,992,877.07/21,102.67
  6. Step 6: Final answer
    x = 15,021.46

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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.