Home / 13,143.50-19,707.68-8,988.55

Finding the Fourth Proportional to 13,143.50, 19,707.68 and 8,988.55

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Solution

The fourth proportional to 13,143.50, 19,707.68 and 8,988.55 is: 13,477.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,143.50 : 19,707.68 = 8,988.55 : x
  2. Step 2: Convert to fraction form
    13,143.50/19,707.68 = 8,988.55/x
  3. Step 3: Cross multiply
    13,143.50x = 19,707.68 × 8,988.55
  4. Step 4: Simplify right side
    13,143.50x = 177,143,406.56
  5. Step 5: Solve for x
    x = 177,143,406.56/13,143.50
  6. Step 6: Final answer
    x = 13,477.64

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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.