Home / 20,880.76-31,318.10-6,085.70

Finding the Fourth Proportional to 20,880.76, 31,318.10 and 6,085.70

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Solution

The fourth proportional to 20,880.76, 31,318.10 and 6,085.70 is: 9,127.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,880.76 : 31,318.10 = 6,085.70 : x
  2. Step 2: Convert to fraction form
    20,880.76/31,318.10 = 6,085.70/x
  3. Step 3: Cross multiply
    20,880.76x = 31,318.10 × 6,085.70
  4. Step 4: Simplify right side
    20,880.76x = 190,592,631.86
  5. Step 5: Solve for x
    x = 190,592,631.86/20,880.76
  6. Step 6: Final answer
    x = 9,127.67

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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.