Home / 20,211.40-27,892.59-11,258.90

Finding the Fourth Proportional to 20,211.40, 27,892.59 and 11,258.90

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Solution

The fourth proportional to 20,211.40, 27,892.59 and 11,258.90 is: 15,537.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.40 : 27,892.59 = 11,258.90 : x
  2. Step 2: Convert to fraction form
    20,211.40/27,892.59 = 11,258.90/x
  3. Step 3: Cross multiply
    20,211.40x = 27,892.59 × 11,258.90
  4. Step 4: Simplify right side
    20,211.40x = 314,039,804.46
  5. Step 5: Solve for x
    x = 314,039,804.46/20,211.40
  6. Step 6: Final answer
    x = 15,537.76

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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.