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Finding the Fourth Proportional to 30,215.88, 45,352.64 and 18,551.88

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Solution

The fourth proportional to 30,215.88, 45,352.64 and 18,551.88 is: 27,845.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,215.88 : 45,352.64 = 18,551.88 : x
  2. Step 2: Convert to fraction form
    30,215.88/45,352.64 = 18,551.88/x
  3. Step 3: Cross multiply
    30,215.88x = 45,352.64 × 18,551.88
  4. Step 4: Simplify right side
    30,215.88x = 841,376,734.96
  5. Step 5: Solve for x
    x = 841,376,734.96/30,215.88
  6. Step 6: Final answer
    x = 27,845.51

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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.