Home / 21,114.80-31,708.65-11,273.30

Finding the Fourth Proportional to 21,114.80, 31,708.65 and 11,273.30

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Solution

The fourth proportional to 21,114.80, 31,708.65 and 11,273.30 is: 16,929.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,114.80 : 31,708.65 = 11,273.30 : x
  2. Step 2: Convert to fraction form
    21,114.80/31,708.65 = 11,273.30/x
  3. Step 3: Cross multiply
    21,114.80x = 31,708.65 × 11,273.30
  4. Step 4: Simplify right side
    21,114.80x = 357,461,124.05
  5. Step 5: Solve for x
    x = 357,461,124.05/21,114.80
  6. Step 6: Final answer
    x = 16,929.41

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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.