Home / 20,278.88-27,973.18-12,206.92

Finding the Fourth Proportional to 20,278.88, 27,973.18 and 12,206.92

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Solution

The fourth proportional to 20,278.88, 27,973.18 and 12,206.92 is: 16,838.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278.88 : 27,973.18 = 12,206.92 : x
  2. Step 2: Convert to fraction form
    20,278.88/27,973.18 = 12,206.92/x
  3. Step 3: Cross multiply
    20,278.88x = 27,973.18 × 12,206.92
  4. Step 4: Simplify right side
    20,278.88x = 341,466,370.41
  5. Step 5: Solve for x
    x = 341,466,370.41/20,278.88
  6. Step 6: Final answer
    x = 16,838.52

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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.