Home / 21,931.11-30,265.14-12,500.28

Finding the Fourth Proportional to 21,931.11, 30,265.14 and 12,500.28

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Solution

The fourth proportional to 21,931.11, 30,265.14 and 12,500.28 is: 17,250.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,931.11 : 30,265.14 = 12,500.28 : x
  2. Step 2: Convert to fraction form
    21,931.11/30,265.14 = 12,500.28/x
  3. Step 3: Cross multiply
    21,931.11x = 30,265.14 × 12,500.28
  4. Step 4: Simplify right side
    21,931.11x = 378,322,724.24
  5. Step 5: Solve for x
    x = 378,322,724.24/21,931.11
  6. Step 6: Final answer
    x = 17,250.51

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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.