Home / 20,826.72-31,240.08-5,245.56

Finding the Fourth Proportional to 20,826.72, 31,240.08 and 5,245.56

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Solution

The fourth proportional to 20,826.72, 31,240.08 and 5,245.56 is: 7,868.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,826.72 : 31,240.08 = 5,245.56 : x
  2. Step 2: Convert to fraction form
    20,826.72/31,240.08 = 5,245.56/x
  3. Step 3: Cross multiply
    20,826.72x = 31,240.08 × 5,245.56
  4. Step 4: Simplify right side
    20,826.72x = 163,871,714.04
  5. Step 5: Solve for x
    x = 163,871,714.04/20,826.72
  6. Step 6: Final answer
    x = 7,868.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.