Home / 21,928.87-30,261.81-11,857.29

Finding the Fourth Proportional to 21,928.87, 30,261.81 and 11,857.29

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Solution

The fourth proportional to 21,928.87, 30,261.81 and 11,857.29 is: 16,363.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,928.87 : 30,261.81 = 11,857.29 : x
  2. Step 2: Convert to fraction form
    21,928.87/30,261.81 = 11,857.29/x
  3. Step 3: Cross multiply
    21,928.87x = 30,261.81 × 11,857.29
  4. Step 4: Simplify right side
    21,928.87x = 358,822,988.08
  5. Step 5: Solve for x
    x = 358,822,988.08/21,928.87
  6. Step 6: Final answer
    x = 16,363.04

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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.