Home / 20,982.10-31,465.81-6,187.09

Finding the Fourth Proportional to 20,982.10, 31,465.81 and 6,187.09

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Solution

The fourth proportional to 20,982.10, 31,465.81 and 6,187.09 is: 9,278.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982.10 : 31,465.81 = 6,187.09 : x
  2. Step 2: Convert to fraction form
    20,982.10/31,465.81 = 6,187.09/x
  3. Step 3: Cross multiply
    20,982.10x = 31,465.81 × 6,187.09
  4. Step 4: Simplify right side
    20,982.10x = 194,681,798.39
  5. Step 5: Solve for x
    x = 194,681,798.39/20,982.10
  6. Step 6: Final answer
    x = 9,278.47

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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.