Home / 13,153.19-18,153.15-8,373.62

Finding the Fourth Proportional to 13,153.19, 18,153.15 and 8,373.62

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Solution

The fourth proportional to 13,153.19, 18,153.15 and 8,373.62 is: 11,556.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,153.19 : 18,153.15 = 8,373.62 : x
  2. Step 2: Convert to fraction form
    13,153.19/18,153.15 = 8,373.62/x
  3. Step 3: Cross multiply
    13,153.19x = 18,153.15 × 8,373.62
  4. Step 4: Simplify right side
    13,153.19x = 152,007,579.90
  5. Step 5: Solve for x
    x = 152,007,579.90/13,153.19
  6. Step 6: Final answer
    x = 11,556.71

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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.