Home / 31,720.47-43,774.22-17,381.21

Finding the Fourth Proportional to 31,720.47, 43,774.22 and 17,381.21

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Solution

The fourth proportional to 31,720.47, 43,774.22 and 17,381.21 is: 23,986.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,720.47 : 43,774.22 = 17,381.21 : x
  2. Step 2: Convert to fraction form
    31,720.47/43,774.22 = 17,381.21/x
  3. Step 3: Cross multiply
    31,720.47x = 43,774.22 × 17,381.21
  4. Step 4: Simplify right side
    31,720.47x = 760,848,604.63
  5. Step 5: Solve for x
    x = 760,848,604.63/31,720.47
  6. Step 6: Final answer
    x = 23,986.04

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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.