Home / 20,917.04-31,347.87-9,803.83

Finding the Fourth Proportional to 20,917.04, 31,347.87 and 9,803.83

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Solution

The fourth proportional to 20,917.04, 31,347.87 and 9,803.83 is: 14,692.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,917.04 : 31,347.87 = 9,803.83 : x
  2. Step 2: Convert to fraction form
    20,917.04/31,347.87 = 9,803.83/x
  3. Step 3: Cross multiply
    20,917.04x = 31,347.87 × 9,803.83
  4. Step 4: Simplify right side
    20,917.04x = 307,329,031.60
  5. Step 5: Solve for x
    x = 307,329,031.60/20,917.04
  6. Step 6: Final answer
    x = 14,692.76

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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.