Home / 17,981.65-26,986.60-12,473.75

Finding the Fourth Proportional to 17,981.65, 26,986.60 and 12,473.75

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Solution

The fourth proportional to 17,981.65, 26,986.60 and 12,473.75 is: 18,720.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,981.65 : 26,986.60 = 12,473.75 : x
  2. Step 2: Convert to fraction form
    17,981.65/26,986.60 = 12,473.75/x
  3. Step 3: Cross multiply
    17,981.65x = 26,986.60 × 12,473.75
  4. Step 4: Simplify right side
    17,981.65x = 336,624,184.81
  5. Step 5: Solve for x
    x = 336,624,184.81/17,981.65
  6. Step 6: Final answer
    x = 18,720.43

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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.