Home / 13,833.20-20,733.36-7,977.68

Finding the Fourth Proportional to 13,833.20, 20,733.36 and 7,977.68

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Solution

The fourth proportional to 13,833.20, 20,733.36 and 7,977.68 is: 11,957.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,833.20 : 20,733.36 = 7,977.68 : x
  2. Step 2: Convert to fraction form
    13,833.20/20,733.36 = 7,977.68/x
  3. Step 3: Cross multiply
    13,833.20x = 20,733.36 × 7,977.68
  4. Step 4: Simplify right side
    13,833.20x = 165,404,111.40
  5. Step 5: Solve for x
    x = 165,404,111.40/13,833.20
  6. Step 6: Final answer
    x = 11,957.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.