Home / 20,996.47-28,974.03-13,038.52

Finding the Fourth Proportional to 20,996.47, 28,974.03 and 13,038.52

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Solution

The fourth proportional to 20,996.47, 28,974.03 and 13,038.52 is: 17,992.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,996.47 : 28,974.03 = 13,038.52 : x
  2. Step 2: Convert to fraction form
    20,996.47/28,974.03 = 13,038.52/x
  3. Step 3: Cross multiply
    20,996.47x = 28,974.03 × 13,038.52
  4. Step 4: Simplify right side
    20,996.47x = 377,778,439.30
  5. Step 5: Solve for x
    x = 377,778,439.30/20,996.47
  6. Step 6: Final answer
    x = 17,992.48

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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.