Home / 28,818.18-43,231.75-12,178.31

Finding the Fourth Proportional to 28,818.18, 43,231.75 and 12,178.31

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Solution

The fourth proportional to 28,818.18, 43,231.75 and 12,178.31 is: 18,269.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,818.18 : 43,231.75 = 12,178.31 : x
  2. Step 2: Convert to fraction form
    28,818.18/43,231.75 = 12,178.31/x
  3. Step 3: Cross multiply
    28,818.18x = 43,231.75 × 12,178.31
  4. Step 4: Simplify right side
    28,818.18x = 526,489,406.74
  5. Step 5: Solve for x
    x = 526,489,406.74/28,818.18
  6. Step 6: Final answer
    x = 18,269.35

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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.