Home / 20,749.88-28,634.51-11,674.55

Finding the Fourth Proportional to 20,749.88, 28,634.51 and 11,674.55

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Solution

The fourth proportional to 20,749.88, 28,634.51 and 11,674.55 is: 16,110.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,749.88 : 28,634.51 = 11,674.55 : x
  2. Step 2: Convert to fraction form
    20,749.88/28,634.51 = 11,674.55/x
  3. Step 3: Cross multiply
    20,749.88x = 28,634.51 × 11,674.55
  4. Step 4: Simplify right side
    20,749.88x = 334,294,875.55
  5. Step 5: Solve for x
    x = 334,294,875.55/20,749.88
  6. Step 6: Final answer
    x = 16,110.69

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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.