Home / 13,167.57-18,160.42-9,389.53

Finding the Fourth Proportional to 13,167.57, 18,160.42 and 9,389.53

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Solution

The fourth proportional to 13,167.57, 18,160.42 and 9,389.53 is: 12,949.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,167.57 : 18,160.42 = 9,389.53 : x
  2. Step 2: Convert to fraction form
    13,167.57/18,160.42 = 9,389.53/x
  3. Step 3: Cross multiply
    13,167.57x = 18,160.42 × 9,389.53
  4. Step 4: Simplify right side
    13,167.57x = 170,517,670.65
  5. Step 5: Solve for x
    x = 170,517,670.65/13,167.57
  6. Step 6: Final answer
    x = 12,949.82

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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.