Home / 30,054.30-45,085.56-12,520.03

Finding the Fourth Proportional to 30,054.30, 45,085.56 and 12,520.03

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Solution

The fourth proportional to 30,054.30, 45,085.56 and 12,520.03 is: 18,781.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,054.30 : 45,085.56 = 12,520.03 : x
  2. Step 2: Convert to fraction form
    30,054.30/45,085.56 = 12,520.03/x
  3. Step 3: Cross multiply
    30,054.30x = 45,085.56 × 12,520.03
  4. Step 4: Simplify right side
    30,054.30x = 564,472,573.17
  5. Step 5: Solve for x
    x = 564,472,573.17/30,054.30
  6. Step 6: Final answer
    x = 18,781.76

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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.