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Finding the Fourth Proportional to 30,486.88, 45,744.89 and 10,774.72

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Solution

The fourth proportional to 30,486.88, 45,744.89 and 10,774.72 is: 16,167.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,486.88 : 45,744.89 = 10,774.72 : x
  2. Step 2: Convert to fraction form
    30,486.88/45,744.89 = 10,774.72/x
  3. Step 3: Cross multiply
    30,486.88x = 45,744.89 × 10,774.72
  4. Step 4: Simplify right side
    30,486.88x = 492,888,381.18
  5. Step 5: Solve for x
    x = 492,888,381.18/30,486.88
  6. Step 6: Final answer
    x = 16,167.23

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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.