Home / 21,954.48-30,296.87-12,394.55

Finding the Fourth Proportional to 21,954.48, 30,296.87 and 12,394.55

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Solution

The fourth proportional to 21,954.48, 30,296.87 and 12,394.55 is: 17,104.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,954.48 : 30,296.87 = 12,394.55 : x
  2. Step 2: Convert to fraction form
    21,954.48/30,296.87 = 12,394.55/x
  3. Step 3: Cross multiply
    21,954.48x = 30,296.87 × 12,394.55
  4. Step 4: Simplify right side
    21,954.48x = 375,516,130.31
  5. Step 5: Solve for x
    x = 375,516,130.31/21,954.48
  6. Step 6: Final answer
    x = 17,104.31

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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.