Home / 20,258.20-27,952.62-15,403.06

Finding the Fourth Proportional to 20,258.20, 27,952.62 and 15,403.06

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Solution

The fourth proportional to 20,258.20, 27,952.62 and 15,403.06 is: 21,253.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,258.20 : 27,952.62 = 15,403.06 : x
  2. Step 2: Convert to fraction form
    20,258.20/27,952.62 = 15,403.06/x
  3. Step 3: Cross multiply
    20,258.20x = 27,952.62 × 15,403.06
  4. Step 4: Simplify right side
    20,258.20x = 430,555,883.02
  5. Step 5: Solve for x
    x = 430,555,883.02/20,258.20
  6. Step 6: Final answer
    x = 21,253.41

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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.