Home / 13,626.29-18,786.93-9,142.94

Finding the Fourth Proportional to 13,626.29, 18,786.93 and 9,142.94

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Solution

The fourth proportional to 13,626.29, 18,786.93 and 9,142.94 is: 12,605.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,626.29 : 18,786.93 = 9,142.94 : x
  2. Step 2: Convert to fraction form
    13,626.29/18,786.93 = 9,142.94/x
  3. Step 3: Cross multiply
    13,626.29x = 18,786.93 × 9,142.94
  4. Step 4: Simplify right side
    13,626.29x = 171,767,773.77
  5. Step 5: Solve for x
    x = 171,767,773.77/13,626.29
  6. Step 6: Final answer
    x = 12,605.62

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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.