Home / 20,737.60-31,103.60-8,266.80

Finding the Fourth Proportional to 20,737.60, 31,103.60 and 8,266.80

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Solution

The fourth proportional to 20,737.60, 31,103.60 and 8,266.80 is: 12,399.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,737.60 : 31,103.60 = 8,266.80 : x
  2. Step 2: Convert to fraction form
    20,737.60/31,103.60 = 8,266.80/x
  3. Step 3: Cross multiply
    20,737.60x = 31,103.60 × 8,266.80
  4. Step 4: Simplify right side
    20,737.60x = 257,127,240.48
  5. Step 5: Solve for x
    x = 257,127,240.48/20,737.60
  6. Step 6: Final answer
    x = 12,399.08

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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.