Home / 20,679.34-31,021.87-6,636.06

Finding the Fourth Proportional to 20,679.34, 31,021.87 and 6,636.06

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Solution

The fourth proportional to 20,679.34, 31,021.87 and 6,636.06 is: 9,955.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.34 : 31,021.87 = 6,636.06 : x
  2. Step 2: Convert to fraction form
    20,679.34/31,021.87 = 6,636.06/x
  3. Step 3: Cross multiply
    20,679.34x = 31,021.87 × 6,636.06
  4. Step 4: Simplify right side
    20,679.34x = 205,862,990.63
  5. Step 5: Solve for x
    x = 205,862,990.63/20,679.34
  6. Step 6: Final answer
    x = 9,955.01

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1.5x scale

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.