Home / 21,946.35-30,288.27-13,454.16

Finding the Fourth Proportional to 21,946.35, 30,288.27 and 13,454.16

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Solution

The fourth proportional to 21,946.35, 30,288.27 and 13,454.16 is: 18,568.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,946.35 : 30,288.27 = 13,454.16 : x
  2. Step 2: Convert to fraction form
    21,946.35/30,288.27 = 13,454.16/x
  3. Step 3: Cross multiply
    21,946.35x = 30,288.27 × 13,454.16
  4. Step 4: Simplify right side
    21,946.35x = 407,503,230.70
  5. Step 5: Solve for x
    x = 407,503,230.70/21,946.35
  6. Step 6: Final answer
    x = 18,568.16

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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.