Home / 20,926.15-31,390.34-6,135.35

Finding the Fourth Proportional to 20,926.15, 31,390.34 and 6,135.35

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Solution

The fourth proportional to 20,926.15, 31,390.34 and 6,135.35 is: 9,203.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,926.15 : 31,390.34 = 6,135.35 : x
  2. Step 2: Convert to fraction form
    20,926.15/31,390.34 = 6,135.35/x
  3. Step 3: Cross multiply
    20,926.15x = 31,390.34 × 6,135.35
  4. Step 4: Simplify right side
    20,926.15x = 192,590,534.89
  5. Step 5: Solve for x
    x = 192,590,534.89/20,926.15
  6. Step 6: Final answer
    x = 9,203.34

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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.