Home / 21,118.98-31,645.12-17,150.93

Finding the Fourth Proportional to 21,118.98, 31,645.12 and 17,150.93

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Solution

The fourth proportional to 21,118.98, 31,645.12 and 17,150.93 is: 25,699.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,118.98 : 31,645.12 = 17,150.93 : x
  2. Step 2: Convert to fraction form
    21,118.98/31,645.12 = 17,150.93/x
  3. Step 3: Cross multiply
    21,118.98x = 31,645.12 × 17,150.93
  4. Step 4: Simplify right side
    21,118.98x = 542,743,119.07
  5. Step 5: Solve for x
    x = 542,743,119.07/21,118.98
  6. Step 6: Final answer
    x = 25,699.30

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1.5x scale

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.