Home / 20,983.54-31,460.73-9,290.38

Finding the Fourth Proportional to 20,983.54, 31,460.73 and 9,290.38

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Solution

The fourth proportional to 20,983.54, 31,460.73 and 9,290.38 is: 13,929.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.54 : 31,460.73 = 9,290.38 : x
  2. Step 2: Convert to fraction form
    20,983.54/31,460.73 = 9,290.38/x
  3. Step 3: Cross multiply
    20,983.54x = 31,460.73 × 9,290.38
  4. Step 4: Simplify right side
    20,983.54x = 292,282,136.78
  5. Step 5: Solve for x
    x = 292,282,136.78/20,983.54
  6. Step 6: Final answer
    x = 13,929.11

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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.