Home / 15,930.41-21,986.17-9,126.54

Finding the Fourth Proportional to 15,930.41, 21,986.17 and 9,126.54

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Solution

The fourth proportional to 15,930.41, 21,986.17 and 9,126.54 is: 12,595.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,930.41 : 21,986.17 = 9,126.54 : x
  2. Step 2: Convert to fraction form
    15,930.41/21,986.17 = 9,126.54/x
  3. Step 3: Cross multiply
    15,930.41x = 21,986.17 × 9,126.54
  4. Step 4: Simplify right side
    15,930.41x = 200,657,637.14
  5. Step 5: Solve for x
    x = 200,657,637.14/15,930.41
  6. Step 6: Final answer
    x = 12,595.89

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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.