Home / 13,191.36-18,188.64-10,530.24

Finding the Fourth Proportional to 13,191.36, 18,188.64 and 10,530.24

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Solution

The fourth proportional to 13,191.36, 18,188.64 and 10,530.24 is: 14,519.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,191.36 : 18,188.64 = 10,530.24 : x
  2. Step 2: Convert to fraction form
    13,191.36/18,188.64 = 10,530.24/x
  3. Step 3: Cross multiply
    13,191.36x = 18,188.64 × 10,530.24
  4. Step 4: Simplify right side
    13,191.36x = 191,530,744.47
  5. Step 5: Solve for x
    x = 191,530,744.47/13,191.36
  6. Step 6: Final answer
    x = 14,519.41

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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.