Home / 21,856.43-30,161.54-12,295.59

Finding the Fourth Proportional to 21,856.43, 30,161.54 and 12,295.59

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Solution

The fourth proportional to 21,856.43, 30,161.54 and 12,295.59 is: 16,967.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,856.43 : 30,161.54 = 12,295.59 : x
  2. Step 2: Convert to fraction form
    21,856.43/30,161.54 = 12,295.59/x
  3. Step 3: Cross multiply
    21,856.43x = 30,161.54 × 12,295.59
  4. Step 4: Simplify right side
    21,856.43x = 370,853,868.13
  5. Step 5: Solve for x
    x = 370,853,868.13/21,856.43
  6. Step 6: Final answer
    x = 16,967.73

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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.