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Finding the Fourth Proportional to 30,212.88, 45,348.12 and 18,548.88

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Solution

The fourth proportional to 30,212.88, 45,348.12 and 18,548.88 is: 27,841.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,212.88 : 45,348.12 = 18,548.88 : x
  2. Step 2: Convert to fraction form
    30,212.88/45,348.12 = 18,548.88/x
  3. Step 3: Cross multiply
    30,212.88x = 45,348.12 × 18,548.88
  4. Step 4: Simplify right side
    30,212.88x = 841,156,836.11
  5. Step 5: Solve for x
    x = 841,156,836.11/30,212.88
  6. Step 6: Final answer
    x = 27,841.00

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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.