Home / 20,071.32-30,111.21-7,591.07

Finding the Fourth Proportional to 20,071.32, 30,111.21 and 7,591.07

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Solution

The fourth proportional to 20,071.32, 30,111.21 and 7,591.07 is: 11,388.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,071.32 : 30,111.21 = 7,591.07 : x
  2. Step 2: Convert to fraction form
    20,071.32/30,111.21 = 7,591.07/x
  3. Step 3: Cross multiply
    20,071.32x = 30,111.21 × 7,591.07
  4. Step 4: Simplify right side
    20,071.32x = 228,576,123.87
  5. Step 5: Solve for x
    x = 228,576,123.87/20,071.32
  6. Step 6: Final answer
    x = 11,388.20

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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.