Home / 28,131.63-38,781.57-19,167.63

Finding the Fourth Proportional to 28,131.63, 38,781.57 and 19,167.63

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Solution

The fourth proportional to 28,131.63, 38,781.57 and 19,167.63 is: 26,424.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,131.63 : 38,781.57 = 19,167.63 : x
  2. Step 2: Convert to fraction form
    28,131.63/38,781.57 = 19,167.63/x
  3. Step 3: Cross multiply
    28,131.63x = 38,781.57 × 19,167.63
  4. Step 4: Simplify right side
    28,131.63x = 743,350,784.58
  5. Step 5: Solve for x
    x = 743,350,784.58/28,131.63
  6. Step 6: Final answer
    x = 26,424.02

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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.