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Finding the Fourth Proportional to 14,031.09, 21,028.01 and 7,443.09

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Solution

The fourth proportional to 14,031.09, 21,028.01 and 7,443.09 is: 11,154.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,031.09 : 21,028.01 = 7,443.09 : x
  2. Step 2: Convert to fraction form
    14,031.09/21,028.01 = 7,443.09/x
  3. Step 3: Cross multiply
    14,031.09x = 21,028.01 × 7,443.09
  4. Step 4: Simplify right side
    14,031.09x = 156,513,333.74
  5. Step 5: Solve for x
    x = 156,513,333.74/14,031.09
  6. Step 6: Final answer
    x = 11,154.75

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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.