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Finding the Fourth Proportional to 14,507.19, 20,031.21 and 11,144.70

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Solution

The fourth proportional to 14,507.19, 20,031.21 and 11,144.70 is: 15,388.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,507.19 : 20,031.21 = 11,144.70 : x
  2. Step 2: Convert to fraction form
    14,507.19/20,031.21 = 11,144.70/x
  3. Step 3: Cross multiply
    14,507.19x = 20,031.21 × 11,144.70
  4. Step 4: Simplify right side
    14,507.19x = 223,241,826.09
  5. Step 5: Solve for x
    x = 223,241,826.09/14,507.19
  6. Step 6: Final answer
    x = 15,388.36

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.