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Finding the Fourth Proportional to 30,274.59, 45,412.12 and 10,553.09

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Solution

The fourth proportional to 30,274.59, 45,412.12 and 10,553.09 is: 15,829.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,274.59 : 45,412.12 = 10,553.09 : x
  2. Step 2: Convert to fraction form
    30,274.59/45,412.12 = 10,553.09/x
  3. Step 3: Cross multiply
    30,274.59x = 45,412.12 × 10,553.09
  4. Step 4: Simplify right side
    30,274.59x = 479,238,189.45
  5. Step 5: Solve for x
    x = 479,238,189.45/30,274.59
  6. Step 6: Final answer
    x = 15,829.72

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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.