Home / 12,283.20-18,424.96-3,518.40

Finding the Fourth Proportional to 12,283.20, 18,424.96 and 3,518.40

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Solution

The fourth proportional to 12,283.20, 18,424.96 and 3,518.40 is: 5,277.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,283.20 : 18,424.96 = 3,518.40 : x
  2. Step 2: Convert to fraction form
    12,283.20/18,424.96 = 3,518.40/x
  3. Step 3: Cross multiply
    12,283.20x = 18,424.96 × 3,518.40
  4. Step 4: Simplify right side
    12,283.20x = 64,826,379.26
  5. Step 5: Solve for x
    x = 64,826,379.26/12,283.20
  6. Step 6: Final answer
    x = 5,277.65

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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.