Home / 20,980.15-31,459.38-6,187.19

Finding the Fourth Proportional to 20,980.15, 31,459.38 and 6,187.19

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Solution

The fourth proportional to 20,980.15, 31,459.38 and 6,187.19 is: 9,277.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,980.15 : 31,459.38 = 6,187.19 : x
  2. Step 2: Convert to fraction form
    20,980.15/31,459.38 = 6,187.19/x
  3. Step 3: Cross multiply
    20,980.15x = 31,459.38 × 6,187.19
  4. Step 4: Simplify right side
    20,980.15x = 194,645,161.34
  5. Step 5: Solve for x
    x = 194,645,161.34/20,980.15
  6. Step 6: Final answer
    x = 9,277.59

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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.