Home / 21,009.04-31,504.21-11,146.07

Finding the Fourth Proportional to 21,009.04, 31,504.21 and 11,146.07

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Solution

The fourth proportional to 21,009.04, 31,504.21 and 11,146.07 is: 16,714.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,009.04 : 31,504.21 = 11,146.07 : x
  2. Step 2: Convert to fraction form
    21,009.04/31,504.21 = 11,146.07/x
  3. Step 3: Cross multiply
    21,009.04x = 31,504.21 × 11,146.07
  4. Step 4: Simplify right side
    21,009.04x = 351,148,180.85
  5. Step 5: Solve for x
    x = 351,148,180.85/21,009.04
  6. Step 6: Final answer
    x = 16,714.15

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1.5x scale

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.