Home / 20,030.85-27,642.40-11,078.26

Finding the Fourth Proportional to 20,030.85, 27,642.40 and 11,078.26

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Solution

The fourth proportional to 20,030.85, 27,642.40 and 11,078.26 is: 15,287.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,030.85 : 27,642.40 = 11,078.26 : x
  2. Step 2: Convert to fraction form
    20,030.85/27,642.40 = 11,078.26/x
  3. Step 3: Cross multiply
    20,030.85x = 27,642.40 × 11,078.26
  4. Step 4: Simplify right side
    20,030.85x = 306,229,597.42
  5. Step 5: Solve for x
    x = 306,229,597.42/20,030.85
  6. Step 6: Final answer
    x = 15,287.90

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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.