Home / 20,907.55-31,358.76-6,116.34

Finding the Fourth Proportional to 20,907.55, 31,358.76 and 6,116.34

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Solution

The fourth proportional to 20,907.55, 31,358.76 and 6,116.34 is: 9,173.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,907.55 : 31,358.76 = 6,116.34 : x
  2. Step 2: Convert to fraction form
    20,907.55/31,358.76 = 6,116.34/x
  3. Step 3: Cross multiply
    20,907.55x = 31,358.76 × 6,116.34
  4. Step 4: Simplify right side
    20,907.55x = 191,800,795.38
  5. Step 5: Solve for x
    x = 191,800,795.38/20,907.55
  6. Step 6: Final answer
    x = 9,173.76

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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.