Home / 21,090.06-31,649.13-14,077.98

Finding the Fourth Proportional to 21,090.06, 31,649.13 and 14,077.98

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Solution

The fourth proportional to 21,090.06, 31,649.13 and 14,077.98 is: 21,126.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,090.06 : 31,649.13 = 14,077.98 : x
  2. Step 2: Convert to fraction form
    21,090.06/31,649.13 = 14,077.98/x
  3. Step 3: Cross multiply
    21,090.06x = 31,649.13 × 14,077.98
  4. Step 4: Simplify right side
    21,090.06x = 445,555,819.16
  5. Step 5: Solve for x
    x = 445,555,819.16/21,090.06
  6. Step 6: Final answer
    x = 21,126.34

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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.