Home / 21,079.64-29,090.49-11,648.81

Finding the Fourth Proportional to 21,079.64, 29,090.49 and 11,648.81

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Solution

The fourth proportional to 21,079.64, 29,090.49 and 11,648.81 is: 16,075.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,079.64 : 29,090.49 = 11,648.81 : x
  2. Step 2: Convert to fraction form
    21,079.64/29,090.49 = 11,648.81/x
  3. Step 3: Cross multiply
    21,079.64x = 29,090.49 × 11,648.81
  4. Step 4: Simplify right side
    21,079.64x = 338,869,590.82
  5. Step 5: Solve for x
    x = 338,869,590.82/21,079.64
  6. Step 6: Final answer
    x = 16,075.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.