Home / 20,672.42-31,008.98-5,881.72

Finding the Fourth Proportional to 20,672.42, 31,008.98 and 5,881.72

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Solution

The fourth proportional to 20,672.42, 31,008.98 and 5,881.72 is: 8,822.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672.42 : 31,008.98 = 5,881.72 : x
  2. Step 2: Convert to fraction form
    20,672.42/31,008.98 = 5,881.72/x
  3. Step 3: Cross multiply
    20,672.42x = 31,008.98 × 5,881.72
  4. Step 4: Simplify right side
    20,672.42x = 182,386,030.91
  5. Step 5: Solve for x
    x = 182,386,030.91/20,672.42
  6. Step 6: Final answer
    x = 8,822.67

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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.