Home / 20,980.03-31,459.20-6,187.06

Finding the Fourth Proportional to 20,980.03, 31,459.20 and 6,187.06

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Solution

The fourth proportional to 20,980.03, 31,459.20 and 6,187.06 is: 9,277.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,980.03 : 31,459.20 = 6,187.06 : x
  2. Step 2: Convert to fraction form
    20,980.03/31,459.20 = 6,187.06/x
  3. Step 3: Cross multiply
    20,980.03x = 31,459.20 × 6,187.06
  4. Step 4: Simplify right side
    20,980.03x = 194,639,957.95
  5. Step 5: Solve for x
    x = 194,639,957.95/20,980.03
  6. Step 6: Final answer
    x = 9,277.39

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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.