Home / 25,830.56-35,640.36-15,221.18

Finding the Fourth Proportional to 25,830.56, 35,640.36 and 15,221.18

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Solution

The fourth proportional to 25,830.56, 35,640.36 and 15,221.18 is: 21,001.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,830.56 : 35,640.36 = 15,221.18 : x
  2. Step 2: Convert to fraction form
    25,830.56/35,640.36 = 15,221.18/x
  3. Step 3: Cross multiply
    25,830.56x = 35,640.36 × 15,221.18
  4. Step 4: Simplify right side
    25,830.56x = 542,488,334.82
  5. Step 5: Solve for x
    x = 542,488,334.82/25,830.56
  6. Step 6: Final answer
    x = 21,001.80

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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.