Home / 13,707.24-18,913.46-8,328.57

Finding the Fourth Proportional to 13,707.24, 18,913.46 and 8,328.57

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Solution

The fourth proportional to 13,707.24, 18,913.46 and 8,328.57 is: 11,491.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,707.24 : 18,913.46 = 8,328.57 : x
  2. Step 2: Convert to fraction form
    13,707.24/18,913.46 = 8,328.57/x
  3. Step 3: Cross multiply
    13,707.24x = 18,913.46 × 8,328.57
  4. Step 4: Simplify right side
    13,707.24x = 157,522,033.91
  5. Step 5: Solve for x
    x = 157,522,033.91/13,707.24
  6. Step 6: Final answer
    x = 11,491.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.