Home / 9,138.24-13,707.72-4,139.64

Finding the Fourth Proportional to 9,138.24, 13,707.72 and 4,139.64

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Solution

The fourth proportional to 9,138.24, 13,707.72 and 4,139.64 is: 6,209.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,138.24 : 13,707.72 = 4,139.64 : x
  2. Step 2: Convert to fraction form
    9,138.24/13,707.72 = 4,139.64/x
  3. Step 3: Cross multiply
    9,138.24x = 13,707.72 × 4,139.64
  4. Step 4: Simplify right side
    9,138.24x = 56,745,026.02
  5. Step 5: Solve for x
    x = 56,745,026.02/9,138.24
  6. Step 6: Final answer
    x = 6,209.62

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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.