Home / 22,638.47-31,242.60-13,080.21

Finding the Fourth Proportional to 22,638.47, 31,242.60 and 13,080.21

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Solution

The fourth proportional to 22,638.47, 31,242.60 and 13,080.21 is: 18,051.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,638.47 : 31,242.60 = 13,080.21 : x
  2. Step 2: Convert to fraction form
    22,638.47/31,242.60 = 13,080.21/x
  3. Step 3: Cross multiply
    22,638.47x = 31,242.60 × 13,080.21
  4. Step 4: Simplify right side
    22,638.47x = 408,659,768.95
  5. Step 5: Solve for x
    x = 408,659,768.95/22,638.47
  6. Step 6: Final answer
    x = 18,051.57

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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.