Home / 13,430.50-20,146.26-5,108.96

Finding the Fourth Proportional to 13,430.50, 20,146.26 and 5,108.96

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Solution

The fourth proportional to 13,430.50, 20,146.26 and 5,108.96 is: 7,663.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,430.50 : 20,146.26 = 5,108.96 : x
  2. Step 2: Convert to fraction form
    13,430.50/20,146.26 = 5,108.96/x
  3. Step 3: Cross multiply
    13,430.50x = 20,146.26 × 5,108.96
  4. Step 4: Simplify right side
    13,430.50x = 102,926,436.49
  5. Step 5: Solve for x
    x = 102,926,436.49/13,430.50
  6. Step 6: Final answer
    x = 7,663.63

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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.