Home / 19,167.30-28,738.65-12,585.81

Finding the Fourth Proportional to 19,167.30, 28,738.65 and 12,585.81

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Solution

The fourth proportional to 19,167.30, 28,738.65 and 12,585.81 is: 18,870.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,167.30 : 28,738.65 = 12,585.81 : x
  2. Step 2: Convert to fraction form
    19,167.30/28,738.65 = 12,585.81/x
  3. Step 3: Cross multiply
    19,167.30x = 28,738.65 × 12,585.81
  4. Step 4: Simplify right side
    19,167.30x = 361,699,188.56
  5. Step 5: Solve for x
    x = 361,699,188.56/19,167.30
  6. Step 6: Final answer
    x = 18,870.64

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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.