Home / 13,389.36-18,454.26-8,905.11

Finding the Fourth Proportional to 13,389.36, 18,454.26 and 8,905.11

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Solution

The fourth proportional to 13,389.36, 18,454.26 and 8,905.11 is: 12,273.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,389.36 : 18,454.26 = 8,905.11 : x
  2. Step 2: Convert to fraction form
    13,389.36/18,454.26 = 8,905.11/x
  3. Step 3: Cross multiply
    13,389.36x = 18,454.26 × 8,905.11
  4. Step 4: Simplify right side
    13,389.36x = 164,337,215.27
  5. Step 5: Solve for x
    x = 164,337,215.27/13,389.36
  6. Step 6: Final answer
    x = 12,273.72

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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.