Home / 21,010.53-29,001.96-18,768.51

Finding the Fourth Proportional to 21,010.53, 29,001.96 and 18,768.51

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Solution

The fourth proportional to 21,010.53, 29,001.96 and 18,768.51 is: 25,907.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,010.53 : 29,001.96 = 18,768.51 : x
  2. Step 2: Convert to fraction form
    21,010.53/29,001.96 = 18,768.51/x
  3. Step 3: Cross multiply
    21,010.53x = 29,001.96 × 18,768.51
  4. Step 4: Simplify right side
    21,010.53x = 544,323,576.28
  5. Step 5: Solve for x
    x = 544,323,576.28/21,010.53
  6. Step 6: Final answer
    x = 25,907.18

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1.5x scale

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.