Home / 20,124.30-27,758.92-12,963.50

Finding the Fourth Proportional to 20,124.30, 27,758.92 and 12,963.50

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Solution

The fourth proportional to 20,124.30, 27,758.92 and 12,963.50 is: 17,881.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124.30 : 27,758.92 = 12,963.50 : x
  2. Step 2: Convert to fraction form
    20,124.30/27,758.92 = 12,963.50/x
  3. Step 3: Cross multiply
    20,124.30x = 27,758.92 × 12,963.50
  4. Step 4: Simplify right side
    20,124.30x = 359,852,759.42
  5. Step 5: Solve for x
    x = 359,852,759.42/20,124.30
  6. Step 6: Final answer
    x = 17,881.50

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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.