Home / 20,980.13-31,459.37-6,187.13

Finding the Fourth Proportional to 20,980.13, 31,459.37 and 6,187.13

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Solution

The fourth proportional to 20,980.13, 31,459.37 and 6,187.13 is: 9,277.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,980.13 : 31,459.37 = 6,187.13 : x
  2. Step 2: Convert to fraction form
    20,980.13/31,459.37 = 6,187.13/x
  3. Step 3: Cross multiply
    20,980.13x = 31,459.37 × 6,187.13
  4. Step 4: Simplify right side
    20,980.13x = 194,643,023.68
  5. Step 5: Solve for x
    x = 194,643,023.68/20,980.13
  6. Step 6: Final answer
    x = 9,277.50

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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.