Home / 13,186.23-18,178.05-9,402.83

Finding the Fourth Proportional to 13,186.23, 18,178.05 and 9,402.83

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Solution

The fourth proportional to 13,186.23, 18,178.05 and 9,402.83 is: 12,962.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.23 : 18,178.05 = 9,402.83 : x
  2. Step 2: Convert to fraction form
    13,186.23/18,178.05 = 9,402.83/x
  3. Step 3: Cross multiply
    13,186.23x = 18,178.05 × 9,402.83
  4. Step 4: Simplify right side
    13,186.23x = 170,925,022.99
  5. Step 5: Solve for x
    x = 170,925,022.99/13,186.23
  6. Step 6: Final answer
    x = 12,962.39

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Half 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.