Home / 21,935.76-30,270.60-12,507.36

Finding the Fourth Proportional to 21,935.76, 30,270.60 and 12,507.36

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Solution

The fourth proportional to 21,935.76, 30,270.60 and 12,507.36 is: 17,259.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,935.76 : 30,270.60 = 12,507.36 : x
  2. Step 2: Convert to fraction form
    21,935.76/30,270.60 = 12,507.36/x
  3. Step 3: Cross multiply
    21,935.76x = 30,270.60 × 12,507.36
  4. Step 4: Simplify right side
    21,935.76x = 378,605,291.62
  5. Step 5: Solve for x
    x = 378,605,291.62/21,935.76
  6. Step 6: Final answer
    x = 17,259.73

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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.