Home / 20,713.76-28,586.60-11,764.07

Finding the Fourth Proportional to 20,713.76, 28,586.60 and 11,764.07

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Solution

The fourth proportional to 20,713.76, 28,586.60 and 11,764.07 is: 16,235.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,713.76 : 28,586.60 = 11,764.07 : x
  2. Step 2: Convert to fraction form
    20,713.76/28,586.60 = 11,764.07/x
  3. Step 3: Cross multiply
    20,713.76x = 28,586.60 × 11,764.07
  4. Step 4: Simplify right side
    20,713.76x = 336,294,561.71
  5. Step 5: Solve for x
    x = 336,294,561.71/20,713.76
  6. Step 6: Final answer
    x = 16,235.33

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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.