Home / 15,091.56-20,822.70-9,785.64

Finding the Fourth Proportional to 15,091.56, 20,822.70 and 9,785.64

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Solution

The fourth proportional to 15,091.56, 20,822.70 and 9,785.64 is: 13,501.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,091.56 : 20,822.70 = 9,785.64 : x
  2. Step 2: Convert to fraction form
    15,091.56/20,822.70 = 9,785.64/x
  3. Step 3: Cross multiply
    15,091.56x = 20,822.70 × 9,785.64
  4. Step 4: Simplify right side
    15,091.56x = 203,763,446.03
  5. Step 5: Solve for x
    x = 203,763,446.03/15,091.56
  6. Step 6: Final answer
    x = 13,501.81

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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.