Home / 13,739.20-20,601.90-6,719.74

Finding the Fourth Proportional to 13,739.20, 20,601.90 and 6,719.74

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Solution

The fourth proportional to 13,739.20, 20,601.90 and 6,719.74 is: 10,076.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,739.20 : 20,601.90 = 6,719.74 : x
  2. Step 2: Convert to fraction form
    13,739.20/20,601.90 = 6,719.74/x
  3. Step 3: Cross multiply
    13,739.20x = 20,601.90 × 6,719.74
  4. Step 4: Simplify right side
    13,739.20x = 138,439,411.51
  5. Step 5: Solve for x
    x = 138,439,411.51/13,739.20
  6. Step 6: Final answer
    x = 10,076.24

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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.