Home / 20,210.85-27,890.73-11,258.33

Finding the Fourth Proportional to 20,210.85, 27,890.73 and 11,258.33

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Solution

The fourth proportional to 20,210.85, 27,890.73 and 11,258.33 is: 15,536.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.85 : 27,890.73 = 11,258.33 : x
  2. Step 2: Convert to fraction form
    20,210.85/27,890.73 = 11,258.33/x
  3. Step 3: Cross multiply
    20,210.85x = 27,890.73 × 11,258.33
  4. Step 4: Simplify right side
    20,210.85x = 314,002,902.83
  5. Step 5: Solve for x
    x = 314,002,902.83/20,210.85
  6. Step 6: Final answer
    x = 15,536.35

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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.