Home / 20,477.10-28,258.30-11,524.75

Finding the Fourth Proportional to 20,477.10, 28,258.30 and 11,524.75

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Solution

The fourth proportional to 20,477.10, 28,258.30 and 11,524.75 is: 15,904.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,477.10 : 28,258.30 = 11,524.75 : x
  2. Step 2: Convert to fraction form
    20,477.10/28,258.30 = 11,524.75/x
  3. Step 3: Cross multiply
    20,477.10x = 28,258.30 × 11,524.75
  4. Step 4: Simplify right side
    20,477.10x = 325,669,842.93
  5. Step 5: Solve for x
    x = 325,669,842.93/20,477.10
  6. Step 6: Final answer
    x = 15,904.10

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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.