Home / 12,761.85-19,140.10-4,861.62

Finding the Fourth Proportional to 12,761.85, 19,140.10 and 4,861.62

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Solution

The fourth proportional to 12,761.85, 19,140.10 and 4,861.62 is: 7,291.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,761.85 : 19,140.10 = 4,861.62 : x
  2. Step 2: Convert to fraction form
    12,761.85/19,140.10 = 4,861.62/x
  3. Step 3: Cross multiply
    12,761.85x = 19,140.10 × 4,861.62
  4. Step 4: Simplify right side
    12,761.85x = 93,051,880.81
  5. Step 5: Solve for x
    x = 93,051,880.81/12,761.85
  6. Step 6: Final answer
    x = 7,291.41

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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.