Home / 13,156.54-18,155.10-8,118.94

Finding the Fourth Proportional to 13,156.54, 18,155.10 and 8,118.94

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Solution

The fourth proportional to 13,156.54, 18,155.10 and 8,118.94 is: 11,203.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,156.54 : 18,155.10 = 8,118.94 : x
  2. Step 2: Convert to fraction form
    13,156.54/18,155.10 = 8,118.94/x
  3. Step 3: Cross multiply
    13,156.54x = 18,155.10 × 8,118.94
  4. Step 4: Simplify right side
    13,156.54x = 147,400,167.59
  5. Step 5: Solve for x
    x = 147,400,167.59/13,156.54
  6. Step 6: Final answer
    x = 11,203.57

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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.