Home / 20,439.11-30,658.64-5,648.00

Finding the Fourth Proportional to 20,439.11, 30,658.64 and 5,648.00

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Solution

The fourth proportional to 20,439.11, 30,658.64 and 5,648.00 is: 8,471.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,439.11 : 30,658.64 = 5,648.00 : x
  2. Step 2: Convert to fraction form
    20,439.11/30,658.64 = 5,648.00/x
  3. Step 3: Cross multiply
    20,439.11x = 30,658.64 × 5,648.00
  4. Step 4: Simplify right side
    20,439.11x = 173,159,817.19
  5. Step 5: Solve for x
    x = 173,159,817.19/20,439.11
  6. Step 6: Final answer
    x = 8,471.98

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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.