Home / 13,747.27-18,971.54-7,777.75

Finding the Fourth Proportional to 13,747.27, 18,971.54 and 7,777.75

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Solution

The fourth proportional to 13,747.27, 18,971.54 and 7,777.75 is: 10,733.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,747.27 : 18,971.54 = 7,777.75 : x
  2. Step 2: Convert to fraction form
    13,747.27/18,971.54 = 7,777.75/x
  3. Step 3: Cross multiply
    13,747.27x = 18,971.54 × 7,777.75
  4. Step 4: Simplify right side
    13,747.27x = 147,555,842.17
  5. Step 5: Solve for x
    x = 147,555,842.17/13,747.27
  6. Step 6: Final answer
    x = 10,733.47

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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.