Home / 20,096.40-27,730.56-12,139.20

Finding the Fourth Proportional to 20,096.40, 27,730.56 and 12,139.20

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Solution

The fourth proportional to 20,096.40, 27,730.56 and 12,139.20 is: 16,750.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,096.40 : 27,730.56 = 12,139.20 : x
  2. Step 2: Convert to fraction form
    20,096.40/27,730.56 = 12,139.20/x
  3. Step 3: Cross multiply
    20,096.40x = 27,730.56 × 12,139.20
  4. Step 4: Simplify right side
    20,096.40x = 336,626,813.95
  5. Step 5: Solve for x
    x = 336,626,813.95/20,096.40
  6. Step 6: Final answer
    x = 16,750.60

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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.