Home / 21,034.20-31,551.30-19,090.20

Finding the Fourth Proportional to 21,034.20, 31,551.30 and 19,090.20

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Solution

The fourth proportional to 21,034.20, 31,551.30 and 19,090.20 is: 28,635.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,034.20 : 31,551.30 = 19,090.20 : x
  2. Step 2: Convert to fraction form
    21,034.20/31,551.30 = 19,090.20/x
  3. Step 3: Cross multiply
    21,034.20x = 31,551.30 × 19,090.20
  4. Step 4: Simplify right side
    21,034.20x = 602,320,627.26
  5. Step 5: Solve for x
    x = 602,320,627.26/21,034.20
  6. Step 6: Final answer
    x = 28,635.30

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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.