Home / 20,789.64-31,184.56-6,749.30

Finding the Fourth Proportional to 20,789.64, 31,184.56 and 6,749.30

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Solution

The fourth proportional to 20,789.64, 31,184.56 and 6,749.30 is: 10,123.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,789.64 : 31,184.56 = 6,749.30 : x
  2. Step 2: Convert to fraction form
    20,789.64/31,184.56 = 6,749.30/x
  3. Step 3: Cross multiply
    20,789.64x = 31,184.56 × 6,749.30
  4. Step 4: Simplify right side
    20,789.64x = 210,473,950.81
  5. Step 5: Solve for x
    x = 210,473,950.81/20,789.64
  6. Step 6: Final answer
    x = 10,123.98

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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.