Home / 20,679.72-31,010.02-6,637.16

Finding the Fourth Proportional to 20,679.72, 31,010.02 and 6,637.16

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Solution

The fourth proportional to 20,679.72, 31,010.02 and 6,637.16 is: 9,952.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.72 : 31,010.02 = 6,637.16 : x
  2. Step 2: Convert to fraction form
    20,679.72/31,010.02 = 6,637.16/x
  3. Step 3: Cross multiply
    20,679.72x = 31,010.02 × 6,637.16
  4. Step 4: Simplify right side
    20,679.72x = 205,818,464.34
  5. Step 5: Solve for x
    x = 205,818,464.34/20,679.72
  6. Step 6: Final answer
    x = 9,952.67

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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.