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Finding the Fourth Proportional to 13,010.40, 19,472.40 and 11,455.20

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Solution

The fourth proportional to 13,010.40, 19,472.40 and 11,455.20 is: 17,144.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,010.40 : 19,472.40 = 11,455.20 : x
  2. Step 2: Convert to fraction form
    13,010.40/19,472.40 = 11,455.20/x
  3. Step 3: Cross multiply
    13,010.40x = 19,472.40 × 11,455.20
  4. Step 4: Simplify right side
    13,010.40x = 223,060,236.48
  5. Step 5: Solve for x
    x = 223,060,236.48/13,010.40
  6. Step 6: Final answer
    x = 17,144.76

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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.