Home / 13,153.08-18,132.37-8,113.90

Finding the Fourth Proportional to 13,153.08, 18,132.37 and 8,113.90

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Solution

The fourth proportional to 13,153.08, 18,132.37 and 8,113.90 is: 11,185.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,153.08 : 18,132.37 = 8,113.90 : x
  2. Step 2: Convert to fraction form
    13,153.08/18,132.37 = 8,113.90/x
  3. Step 3: Cross multiply
    13,153.08x = 18,132.37 × 8,113.90
  4. Step 4: Simplify right side
    13,153.08x = 147,124,105.71
  5. Step 5: Solve for x
    x = 147,124,105.71/13,153.08
  6. Step 6: Final answer
    x = 11,185.53

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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.