Home / 21,708.53-29,842.89-18,672.55

Finding the Fourth Proportional to 21,708.53, 29,842.89 and 18,672.55

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Solution

The fourth proportional to 21,708.53, 29,842.89 and 18,672.55 is: 25,669.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,708.53 : 29,842.89 = 18,672.55 : x
  2. Step 2: Convert to fraction form
    21,708.53/29,842.89 = 18,672.55/x
  3. Step 3: Cross multiply
    21,708.53x = 29,842.89 × 18,672.55
  4. Step 4: Simplify right side
    21,708.53x = 557,242,855.67
  5. Step 5: Solve for x
    x = 557,242,855.67/21,708.53
  6. Step 6: Final answer
    x = 25,669.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.