Home / 20,701.60-31,028.10-10,835.80

Finding the Fourth Proportional to 20,701.60, 31,028.10 and 10,835.80

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Solution

The fourth proportional to 20,701.60, 31,028.10 and 10,835.80 is: 16,240.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.60 : 31,028.10 = 10,835.80 : x
  2. Step 2: Convert to fraction form
    20,701.60/31,028.10 = 10,835.80/x
  3. Step 3: Cross multiply
    20,701.60x = 31,028.10 × 10,835.80
  4. Step 4: Simplify right side
    20,701.60x = 336,214,285.98
  5. Step 5: Solve for x
    x = 336,214,285.98/20,701.60
  6. Step 6: Final answer
    x = 16,240.98

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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.