Home / 15,076.78-20,776.33-11,090.95

Finding the Fourth Proportional to 15,076.78, 20,776.33 and 11,090.95

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Solution

The fourth proportional to 15,076.78, 20,776.33 and 11,090.95 is: 15,283.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,076.78 : 20,776.33 = 11,090.95 : x
  2. Step 2: Convert to fraction form
    15,076.78/20,776.33 = 11,090.95/x
  3. Step 3: Cross multiply
    15,076.78x = 20,776.33 × 11,090.95
  4. Step 4: Simplify right side
    15,076.78x = 230,429,237.21
  5. Step 5: Solve for x
    x = 230,429,237.21/15,076.78
  6. Step 6: Final answer
    x = 15,283.72

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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.