Home / 13,122.56-19,688.76-7,861.26

Finding the Fourth Proportional to 13,122.56, 19,688.76 and 7,861.26

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Solution

The fourth proportional to 13,122.56, 19,688.76 and 7,861.26 is: 11,794.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122.56 : 19,688.76 = 7,861.26 : x
  2. Step 2: Convert to fraction form
    13,122.56/19,688.76 = 7,861.26/x
  3. Step 3: Cross multiply
    13,122.56x = 19,688.76 × 7,861.26
  4. Step 4: Simplify right side
    13,122.56x = 154,778,461.44
  5. Step 5: Solve for x
    x = 154,778,461.44/13,122.56
  6. Step 6: Final answer
    x = 11,794.84

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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.