Home / 20,587.21-28,409.99-11,634.54

Finding the Fourth Proportional to 20,587.21, 28,409.99 and 11,634.54

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Solution

The fourth proportional to 20,587.21, 28,409.99 and 11,634.54 is: 16,055.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,587.21 : 28,409.99 = 11,634.54 : x
  2. Step 2: Convert to fraction form
    20,587.21/28,409.99 = 11,634.54/x
  3. Step 3: Cross multiply
    20,587.21x = 28,409.99 × 11,634.54
  4. Step 4: Simplify right side
    20,587.21x = 330,537,065.79
  5. Step 5: Solve for x
    x = 330,537,065.79/20,587.21
  6. Step 6: Final answer
    x = 16,055.45

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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.