Home / 20,288.96-30,437.60-7,808.96

Finding the Fourth Proportional to 20,288.96, 30,437.60 and 7,808.96

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Solution

The fourth proportional to 20,288.96, 30,437.60 and 7,808.96 is: 11,715.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,288.96 : 30,437.60 = 7,808.96 : x
  2. Step 2: Convert to fraction form
    20,288.96/30,437.60 = 7,808.96/x
  3. Step 3: Cross multiply
    20,288.96x = 30,437.60 × 7,808.96
  4. Step 4: Simplify right side
    20,288.96x = 237,686,000.90
  5. Step 5: Solve for x
    x = 237,686,000.90/20,288.96
  6. Step 6: Final answer
    x = 11,715.04

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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.