Home / 20,784.70-31,153.90-8,301.52

Finding the Fourth Proportional to 20,784.70, 31,153.90 and 8,301.52

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Solution

The fourth proportional to 20,784.70, 31,153.90 and 8,301.52 is: 12,443.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784.70 : 31,153.90 = 8,301.52 : x
  2. Step 2: Convert to fraction form
    20,784.70/31,153.90 = 8,301.52/x
  3. Step 3: Cross multiply
    20,784.70x = 31,153.90 × 8,301.52
  4. Step 4: Simplify right side
    20,784.70x = 258,624,723.93
  5. Step 5: Solve for x
    x = 258,624,723.93/20,784.70
  6. Step 6: Final answer
    x = 12,443.03

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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.