Home / 20,030.45-27,639.90-11,076.53

Finding the Fourth Proportional to 20,030.45, 27,639.90 and 11,076.53

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Solution

The fourth proportional to 20,030.45, 27,639.90 and 11,076.53 is: 15,284.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,030.45 : 27,639.90 = 11,076.53 : x
  2. Step 2: Convert to fraction form
    20,030.45/27,639.90 = 11,076.53/x
  3. Step 3: Cross multiply
    20,030.45x = 27,639.90 × 11,076.53
  4. Step 4: Simplify right side
    20,030.45x = 306,154,043.35
  5. Step 5: Solve for x
    x = 306,154,043.35/20,030.45
  6. Step 6: Final answer
    x = 15,284.44

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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.