Home / 21,042.21-31,575.39-8,559.93

Finding the Fourth Proportional to 21,042.21, 31,575.39 and 8,559.93

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Solution

The fourth proportional to 21,042.21, 31,575.39 and 8,559.93 is: 12,844.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,042.21 : 31,575.39 = 8,559.93 : x
  2. Step 2: Convert to fraction form
    21,042.21/31,575.39 = 8,559.93/x
  3. Step 3: Cross multiply
    21,042.21x = 31,575.39 × 8,559.93
  4. Step 4: Simplify right side
    21,042.21x = 270,283,128.12
  5. Step 5: Solve for x
    x = 270,283,128.12/21,042.21
  6. Step 6: Final answer
    x = 12,844.81

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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.