Home / 21,887.54-30,203.56-12,935.87

Finding the Fourth Proportional to 21,887.54, 30,203.56 and 12,935.87

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Solution

The fourth proportional to 21,887.54, 30,203.56 and 12,935.87 is: 17,850.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,887.54 : 30,203.56 = 12,935.87 : x
  2. Step 2: Convert to fraction form
    21,887.54/30,203.56 = 12,935.87/x
  3. Step 3: Cross multiply
    21,887.54x = 30,203.56 × 12,935.87
  4. Step 4: Simplify right side
    21,887.54x = 390,709,325.70
  5. Step 5: Solve for x
    x = 390,709,325.70/21,887.54
  6. Step 6: Final answer
    x = 17,850.76

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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.