Home / 21,106.04-31,631.15-11,090.32

Finding the Fourth Proportional to 21,106.04, 31,631.15 and 11,090.32

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Solution

The fourth proportional to 21,106.04, 31,631.15 and 11,090.32 is: 16,620.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,106.04 : 31,631.15 = 11,090.32 : x
  2. Step 2: Convert to fraction form
    21,106.04/31,631.15 = 11,090.32/x
  3. Step 3: Cross multiply
    21,106.04x = 31,631.15 × 11,090.32
  4. Step 4: Simplify right side
    21,106.04x = 350,799,575.47
  5. Step 5: Solve for x
    x = 350,799,575.47/21,106.04
  6. Step 6: Final answer
    x = 16,620.81

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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.