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Finding the Fourth Proportional to 13,615.01, 20,423.54 and 3,754.20

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Solution

The fourth proportional to 13,615.01, 20,423.54 and 3,754.20 is: 5,631.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,615.01 : 20,423.54 = 3,754.20 : x
  2. Step 2: Convert to fraction form
    13,615.01/20,423.54 = 3,754.20/x
  3. Step 3: Cross multiply
    13,615.01x = 20,423.54 × 3,754.20
  4. Step 4: Simplify right side
    13,615.01x = 76,674,053.87
  5. Step 5: Solve for x
    x = 76,674,053.87/13,615.01
  6. Step 6: Final answer
    x = 5,631.58

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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.