Home / 30,490.60-45,764.70-18,826.60

Finding the Fourth Proportional to 30,490.60, 45,764.70 and 18,826.60

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Solution

The fourth proportional to 30,490.60, 45,764.70 and 18,826.60 is: 28,257.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,490.60 : 45,764.70 = 18,826.60 : x
  2. Step 2: Convert to fraction form
    30,490.60/45,764.70 = 18,826.60/x
  3. Step 3: Cross multiply
    30,490.60x = 45,764.70 × 18,826.60
  4. Step 4: Simplify right side
    30,490.60x = 861,593,701.02
  5. Step 5: Solve for x
    x = 861,593,701.02/30,490.60
  6. Step 6: Final answer
    x = 28,257.68

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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.