Home / 12,139.16-18,204.69-4,741.70

Finding the Fourth Proportional to 12,139.16, 18,204.69 and 4,741.70

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Solution

The fourth proportional to 12,139.16, 18,204.69 and 4,741.70 is: 7,110.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,139.16 : 18,204.69 = 4,741.70 : x
  2. Step 2: Convert to fraction form
    12,139.16/18,204.69 = 4,741.70/x
  3. Step 3: Cross multiply
    12,139.16x = 18,204.69 × 4,741.70
  4. Step 4: Simplify right side
    12,139.16x = 86,321,178.57
  5. Step 5: Solve for x
    x = 86,321,178.57/12,139.16
  6. Step 6: Final answer
    x = 7,110.97

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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.