Home / 21,165.51-29,342.13-20,042.01

Finding the Fourth Proportional to 21,165.51, 29,342.13 and 20,042.01

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Solution

The fourth proportional to 21,165.51, 29,342.13 and 20,042.01 is: 27,784.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,165.51 : 29,342.13 = 20,042.01 : x
  2. Step 2: Convert to fraction form
    21,165.51/29,342.13 = 20,042.01/x
  3. Step 3: Cross multiply
    21,165.51x = 29,342.13 × 20,042.01
  4. Step 4: Simplify right side
    21,165.51x = 588,075,262.88
  5. Step 5: Solve for x
    x = 588,075,262.88/21,165.51
  6. Step 6: Final answer
    x = 27,784.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.