Home / 13,154.88-18,153.84-7,186.80

Finding the Fourth Proportional to 13,154.88, 18,153.84 and 7,186.80

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Solution

The fourth proportional to 13,154.88, 18,153.84 and 7,186.80 is: 9,917.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,154.88 : 18,153.84 = 7,186.80 : x
  2. Step 2: Convert to fraction form
    13,154.88/18,153.84 = 7,186.80/x
  3. Step 3: Cross multiply
    13,154.88x = 18,153.84 × 7,186.80
  4. Step 4: Simplify right side
    13,154.88x = 130,468,017.31
  5. Step 5: Solve for x
    x = 130,468,017.31/13,154.88
  6. Step 6: Final answer
    x = 9,917.84

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Double scale
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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.