Home / 20,875.40-31,317.96-6,835.38

Finding the Fourth Proportional to 20,875.40, 31,317.96 and 6,835.38

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Solution

The fourth proportional to 20,875.40, 31,317.96 and 6,835.38 is: 10,254.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,875.40 : 31,317.96 = 6,835.38 : x
  2. Step 2: Convert to fraction form
    20,875.40/31,317.96 = 6,835.38/x
  3. Step 3: Cross multiply
    20,875.40x = 31,317.96 × 6,835.38
  4. Step 4: Simplify right side
    20,875.40x = 214,070,157.42
  5. Step 5: Solve for x
    x = 214,070,157.42/20,875.40
  6. Step 6: Final answer
    x = 10,254.66

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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.