Home / 20,982.66-28,959.96-12,030.23

Finding the Fourth Proportional to 20,982.66, 28,959.96 and 12,030.23

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Solution

The fourth proportional to 20,982.66, 28,959.96 and 12,030.23 is: 16,603.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982.66 : 28,959.96 = 12,030.23 : x
  2. Step 2: Convert to fraction form
    20,982.66/28,959.96 = 12,030.23/x
  3. Step 3: Cross multiply
    20,982.66x = 28,959.96 × 12,030.23
  4. Step 4: Simplify right side
    20,982.66x = 348,394,774.64
  5. Step 5: Solve for x
    x = 348,394,774.64/20,982.66
  6. Step 6: Final answer
    x = 16,603.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.