Home / 20,681.34-31,024.87-6,638.06

Finding the Fourth Proportional to 20,681.34, 31,024.87 and 6,638.06

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Solution

The fourth proportional to 20,681.34, 31,024.87 and 6,638.06 is: 9,958.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.34 : 31,024.87 = 6,638.06 : x
  2. Step 2: Convert to fraction form
    20,681.34/31,024.87 = 6,638.06/x
  3. Step 3: Cross multiply
    20,681.34x = 31,024.87 × 6,638.06
  4. Step 4: Simplify right side
    20,681.34x = 205,944,948.55
  5. Step 5: Solve for x
    x = 205,944,948.55/20,681.34
  6. Step 6: Final answer
    x = 9,958.01

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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.